rhg: $HG_PENDING is not supported

Trigger fallback in that case, if configured to do so.

Differential Revision: https://phab.mercurial-scm.org/D11758

rust/rhg/src/main.rs

@@ -1,618 +1,630 b''
 extern crate log;
+use crate::error::CommandError;
 use crate::ui::Ui;
 use clap::App;
 use clap::AppSettings;
 use clap::Arg;
 use clap::ArgMatches;
 use format_bytes::{format_bytes, join};
 use hg::config::{Config, ConfigSource};
 use hg::exit_codes;
 use hg::repo::{Repo, RepoError};
 use hg::utils::files::{get_bytes_from_os_str, get_path_from_bytes};
 use hg::utils::SliceExt;
 use std::ffi::OsString;
 use std::path::PathBuf;
 use std::process::Command;
 
 mod blackbox;
 mod error;
 mod ui;
 pub mod utils {
     pub mod path_utils;
 }
-use error::CommandError;
 
 fn main_with_result(
     process_start_time: &blackbox::ProcessStartTime,
     ui: &ui::Ui,
     repo: Result<&Repo, &NoRepoInCwdError>,
     config: &Config,
 ) -> Result<(), CommandError> {
-    check_extensions(config)?;
+    check_unsupported(config)?;
 
     let app = App::new("rhg")
         .global_setting(AppSettings::AllowInvalidUtf8)
         .global_setting(AppSettings::DisableVersion)
         .setting(AppSettings::SubcommandRequired)
         .setting(AppSettings::VersionlessSubcommands)
         .arg(
             Arg::with_name("repository")
                 .help("repository root directory")
                 .short("-R")
                 .long("--repository")
                 .value_name("REPO")
                 .takes_value(true)
                 // Both ok: `hg -R ./foo log` or `hg log -R ./foo`
                 .global(true),
         )
         .arg(
             Arg::with_name("config")
                 .help("set/override config option (use 'section.name=value')")
                 .long("--config")
                 .value_name("CONFIG")
                 .takes_value(true)
                 .global(true)
                 // Ok: `--config section.key1=val --config section.key2=val2`
                 .multiple(true)
                 // Not ok: `--config section.key1=val section.key2=val2`
                 .number_of_values(1),
         )
         .arg(
             Arg::with_name("cwd")
                 .help("change working directory")
                 .long("--cwd")
                 .value_name("DIR")
                 .takes_value(true)
                 .global(true),
         )
         .version("0.0.1");
     let app = add_subcommand_args(app);
 
     let matches = app.clone().get_matches_safe()?;
 
     let (subcommand_name, subcommand_matches) = matches.subcommand();
 
     // Mercurial allows users to define "defaults" for commands, fallback
     // if a default is detected for the current command
     let defaults = config.get_str(b"defaults", subcommand_name.as_bytes());
     if defaults?.is_some() {
         let msg = "`defaults` config set";
         return Err(CommandError::unsupported(msg));
     }
 
     for prefix in ["pre", "post", "fail"].iter() {
         // Mercurial allows users to define generic hooks for commands,
         // fallback if any are detected
         let item = format!("{}-{}", prefix, subcommand_name);
         let hook_for_command = config.get_str(b"hooks", item.as_bytes())?;
         if hook_for_command.is_some() {
             let msg = format!("{}-{} hook defined", prefix, subcommand_name);
             return Err(CommandError::unsupported(msg));
         }
     }
     let run = subcommand_run_fn(subcommand_name)
         .expect("unknown subcommand name from clap despite AppSettings::SubcommandRequired");
     let subcommand_args = subcommand_matches
         .expect("no subcommand arguments from clap despite AppSettings::SubcommandRequired");
 
     let invocation = CliInvocation {
         ui,
         subcommand_args,
         config,
         repo,
     };
 
     if let Ok(repo) = repo {
         // We don't support subrepos, fallback if the subrepos file is present
         if repo.working_directory_vfs().join(".hgsub").exists() {
             let msg = "subrepos (.hgsub is present)";
             return Err(CommandError::unsupported(msg));
         }
     }
 
     let blackbox = blackbox::Blackbox::new(&invocation, process_start_time)?;
     blackbox.log_command_start();
     let result = run(&invocation);
     blackbox.log_command_end(exit_code(
         &result,
         // TODO: show a warning or combine with original error if `get_bool`
         // returns an error
         config
             .get_bool(b"ui", b"detailed-exit-code")
             .unwrap_or(false),
     ));
     result
 }
 
 fn main() {
     // Run this first, before we find out if the blackbox extension is even
     // enabled, in order to include everything in-between in the duration
     // measurements. Reading config files can be slow if they’re on NFS.
     let process_start_time = blackbox::ProcessStartTime::now();
 
     env_logger::init();
     let ui = ui::Ui::new();
 
     let early_args = EarlyArgs::parse(std::env::args_os());
 
     let initial_current_dir = early_args.cwd.map(|cwd| {
         let cwd = get_path_from_bytes(&cwd);
         std::env::current_dir()
             .and_then(|initial| {
                 std::env::set_current_dir(cwd)?;
                 Ok(initial)
             })
             .unwrap_or_else(|error| {
                 exit(
                     &None,
                     &ui,
                     OnUnsupported::Abort,
                     Err(CommandError::abort(format!(
                         "abort: {}: '{}'",
                         error,
                         cwd.display()
                     ))),
                     false,
                 )
             })
     });
 
     let mut non_repo_config =
         Config::load_non_repo().unwrap_or_else(|error| {
             // Normally this is decided based on config, but we don’t have that
             // available. As of this writing config loading never returns an
             // "unsupported" error but that is not enforced by the type system.
             let on_unsupported = OnUnsupported::Abort;
 
             exit(
                 &initial_current_dir,
                 &ui,
                 on_unsupported,
                 Err(error.into()),
                 false,
             )
         });
 
     non_repo_config
         .load_cli_args_config(early_args.config)
         .unwrap_or_else(|error| {
             exit(
                 &initial_current_dir,
                 &ui,
                 OnUnsupported::from_config(&ui, &non_repo_config),
                 Err(error.into()),
                 non_repo_config
                     .get_bool(b"ui", b"detailed-exit-code")
                     .unwrap_or(false),
             )
         });
 
     if let Some(repo_path_bytes) = &early_args.repo {
         lazy_static::lazy_static! {
             static ref SCHEME_RE: regex::bytes::Regex =
                 // Same as `_matchscheme` in `mercurial/util.py`
                 regex::bytes::Regex::new("^[a-zA-Z0-9+.\\-]+:").unwrap();
         }
         if SCHEME_RE.is_match(&repo_path_bytes) {
             exit(
                 &initial_current_dir,
                 &ui,
                 OnUnsupported::from_config(&ui, &non_repo_config),
                 Err(CommandError::UnsupportedFeature {
                     message: format_bytes!(
                         b"URL-like --repository {}",
                         repo_path_bytes
                     ),
                 }),
                 // TODO: show a warning or combine with original error if
                 // `get_bool` returns an error
                 non_repo_config
                     .get_bool(b"ui", b"detailed-exit-code")
                     .unwrap_or(false),
             )
         }
     }
     let repo_arg = early_args.repo.unwrap_or(Vec::new());
     let repo_path: Option<PathBuf> = {
         if repo_arg.is_empty() {
             None
         } else {
             let local_config = {
                 if std::env::var_os("HGRCSKIPREPO").is_none() {
                     // TODO: handle errors from find_repo_root
                     if let Ok(current_dir_path) = Repo::find_repo_root() {
                         let config_files = vec![
                             ConfigSource::AbsPath(
                                 current_dir_path.join(".hg/hgrc"),
                             ),
                             ConfigSource::AbsPath(
                                 current_dir_path.join(".hg/hgrc-not-shared"),
                             ),
                         ];
                         // TODO: handle errors from
                         // `load_from_explicit_sources`
                         Config::load_from_explicit_sources(config_files).ok()
                     } else {
                         None
                     }
                 } else {
                     None
                 }
             };
 
             let non_repo_config_val = {
                 let non_repo_val = non_repo_config.get(b"paths", &repo_arg);
                 match &non_repo_val {
                     Some(val) if val.len() > 0 => home::home_dir()
                         .unwrap_or_else(|| PathBuf::from("~"))
                         .join(get_path_from_bytes(val))
                         .canonicalize()
                         // TODO: handle error and make it similar to python
                         // implementation maybe?
                         .ok(),
                     _ => None,
                 }
             };
 
             let config_val = match &local_config {
                 None => non_repo_config_val,
                 Some(val) => {
                     let local_config_val = val.get(b"paths", &repo_arg);
                     match &local_config_val {
                         Some(val) if val.len() > 0 => {
                             // presence of a local_config assures that
                             // current_dir
                             // wont result in an Error
                             let canpath = hg::utils::current_dir()
                                 .unwrap()
                                 .join(get_path_from_bytes(val))
                                 .canonicalize();
                             canpath.ok().or(non_repo_config_val)
                         }
                         _ => non_repo_config_val,
                     }
                 }
             };
             config_val.or(Some(get_path_from_bytes(&repo_arg).to_path_buf()))
         }
     };
 
     let repo_result = match Repo::find(&non_repo_config, repo_path.to_owned())
     {
         Ok(repo) => Ok(repo),
         Err(RepoError::NotFound { at }) if repo_path.is_none() => {
             // Not finding a repo is not fatal yet, if `-R` was not given
             Err(NoRepoInCwdError { cwd: at })
         }
         Err(error) => exit(
             &initial_current_dir,
             &ui,
             OnUnsupported::from_config(&ui, &non_repo_config),
             Err(error.into()),
             // TODO: show a warning or combine with original error if
             // `get_bool` returns an error
             non_repo_config
                 .get_bool(b"ui", b"detailed-exit-code")
                 .unwrap_or(false),
         ),
     };
 
     let config = if let Ok(repo) = &repo_result {
         repo.config()
     } else {
         &non_repo_config
     };
     let on_unsupported = OnUnsupported::from_config(&ui, config);
 
     let result = main_with_result(
         &process_start_time,
         &ui,
         repo_result.as_ref(),
         config,
     );
     exit(
         &initial_current_dir,
         &ui,
         on_unsupported,
         result,
         // TODO: show a warning or combine with original error if `get_bool`
         // returns an error
         config
             .get_bool(b"ui", b"detailed-exit-code")
             .unwrap_or(false),
     )
 }
 
 fn exit_code(
     result: &Result<(), CommandError>,
     use_detailed_exit_code: bool,
 ) -> i32 {
     match result {
         Ok(()) => exit_codes::OK,
         Err(CommandError::Abort {
             message: _,
             detailed_exit_code,
         }) => {
             if use_detailed_exit_code {
                 *detailed_exit_code
             } else {
                 exit_codes::ABORT
             }
         }
         Err(CommandError::Unsuccessful) => exit_codes::UNSUCCESSFUL,
 
         // Exit with a specific code and no error message to let a potential
         // wrapper script fallback to Python-based Mercurial.
         Err(CommandError::UnsupportedFeature { .. }) => {
             exit_codes::UNIMPLEMENTED
         }
     }
 }
 
 fn exit(
     initial_current_dir: &Option<PathBuf>,
     ui: &Ui,
     mut on_unsupported: OnUnsupported,
     result: Result<(), CommandError>,
     use_detailed_exit_code: bool,
 ) -> ! {
     if let (
         OnUnsupported::Fallback { executable },
         Err(CommandError::UnsupportedFeature { .. }),
     ) = (&on_unsupported, &result)
     {
         let mut args = std::env::args_os();
         let executable_path = get_path_from_bytes(&executable);
         let this_executable = args.next().expect("exepcted argv[0] to exist");
         if executable_path == &PathBuf::from(this_executable) {
             // Avoid spawning infinitely many processes until resource
             // exhaustion.
             let _ = ui.write_stderr(&format_bytes!(
                 b"Blocking recursive fallback. The 'rhg.fallback-executable = {}' config \
                 points to `rhg` itself.\n",
                 executable
             ));
             on_unsupported = OnUnsupported::Abort
         } else {
             // `args` is now `argv[1..]` since we’ve already consumed `argv[0]`
             let mut command = Command::new(executable_path);
             command.args(args);
             if let Some(initial) = initial_current_dir {
                 command.current_dir(initial);
             }
             let result = command.status();
             match result {
                 Ok(status) => std::process::exit(
                     status.code().unwrap_or(exit_codes::ABORT),
                 ),
                 Err(error) => {
                     let _ = ui.write_stderr(&format_bytes!(
                         b"tried to fall back to a '{}' sub-process but got error {}\n",
                         executable, format_bytes::Utf8(error)
                     ));
                     on_unsupported = OnUnsupported::Abort
                 }
             }
         }
     }
     exit_no_fallback(ui, on_unsupported, result, use_detailed_exit_code)
 }
 
 fn exit_no_fallback(
     ui: &Ui,
     on_unsupported: OnUnsupported,
     result: Result<(), CommandError>,
     use_detailed_exit_code: bool,
 ) -> ! {
     match &result {
         Ok(_) => {}
         Err(CommandError::Unsuccessful) => {}
         Err(CommandError::Abort {
             message,
             detailed_exit_code: _,
         }) => {
             if !message.is_empty() {
                 // Ignore errors when writing to stderr, we’re already exiting
                 // with failure code so there’s not much more we can do.
                 let _ = ui.write_stderr(&format_bytes!(b"{}\n", message));
             }
         }
         Err(CommandError::UnsupportedFeature { message }) => {
             match on_unsupported {
                 OnUnsupported::Abort => {
                     let _ = ui.write_stderr(&format_bytes!(
                         b"unsupported feature: {}\n",
                         message
                     ));
                 }
                 OnUnsupported::AbortSilent => {}
                 OnUnsupported::Fallback { .. } => unreachable!(),
             }
         }
     }
     std::process::exit(exit_code(&result, use_detailed_exit_code))
 }
 
 macro_rules! subcommands {
     ($( $command: ident )+) => {
         mod commands {
             $(
                 pub mod $command;
             )+
         }
 
         fn add_subcommand_args<'a, 'b>(app: App<'a, 'b>) -> App<'a, 'b> {
             app
             $(
                 .subcommand(commands::$command::args())
             )+
         }
 
         pub type RunFn = fn(&CliInvocation) -> Result<(), CommandError>;
 
         fn subcommand_run_fn(name: &str) -> Option<RunFn> {
             match name {
                 $(
                     stringify!($command) => Some(commands::$command::run),
                 )+
                 _ => None,
             }
         }
     };
 }
 
 subcommands! {
     cat
     debugdata
     debugrequirements
     files
     root
     config
     status
 }
 
 pub struct CliInvocation<'a> {
     ui: &'a Ui,
     subcommand_args: &'a ArgMatches<'a>,
     config: &'a Config,
     /// References inside `Result` is a bit peculiar but allow
     /// `invocation.repo?` to work out with `&CliInvocation` since this
     /// `Result` type is `Copy`.
     repo: Result<&'a Repo, &'a NoRepoInCwdError>,
 }
 
 struct NoRepoInCwdError {
     cwd: PathBuf,
 }
 
 /// CLI arguments to be parsed "early" in order to be able to read
 /// configuration before using Clap. Ideally we would also use Clap for this,
 /// see <https://github.com/clap-rs/clap/discussions/2366>.
 ///
 /// These arguments are still declared when we do use Clap later, so that Clap
 /// does not return an error for their presence.
 struct EarlyArgs {
     /// Values of all `--config` arguments. (Possibly none)
     config: Vec<Vec<u8>>,
     /// Value of the `-R` or `--repository` argument, if any.
     repo: Option<Vec<u8>>,
     /// Value of the `--cwd` argument, if any.
     cwd: Option<Vec<u8>>,
 }
 
 impl EarlyArgs {
     fn parse(args: impl IntoIterator<Item = OsString>) -> Self {
         let mut args = args.into_iter().map(get_bytes_from_os_str);
         let mut config = Vec::new();
         let mut repo = None;
         let mut cwd = None;
         // Use `while let` instead of `for` so that we can also call
         // `args.next()` inside the loop.
         while let Some(arg) = args.next() {
             if arg == b"--config" {
                 if let Some(value) = args.next() {
                     config.push(value)
                 }
             } else if let Some(value) = arg.drop_prefix(b"--config=") {
                 config.push(value.to_owned())
             }
 
             if arg == b"--cwd" {
                 if let Some(value) = args.next() {
                     cwd = Some(value)
                 }
             } else if let Some(value) = arg.drop_prefix(b"--cwd=") {
                 cwd = Some(value.to_owned())
             }
 
             if arg == b"--repository" || arg == b"-R" {
                 if let Some(value) = args.next() {
                     repo = Some(value)
                 }
             } else if let Some(value) = arg.drop_prefix(b"--repository=") {
                 repo = Some(value.to_owned())
             } else if let Some(value) = arg.drop_prefix(b"-R") {
                 repo = Some(value.to_owned())
             }
         }
         Self { config, repo, cwd }
     }
 }
 
 /// What to do when encountering some unsupported feature.
 ///
 /// See `HgError::UnsupportedFeature` and `CommandError::UnsupportedFeature`.
 enum OnUnsupported {
     /// Print an error message describing what feature is not supported,
     /// and exit with code 252.
     Abort,
     /// Silently exit with code 252.
     AbortSilent,
     /// Try running a Python implementation
     Fallback { executable: Vec<u8> },
 }
 
 impl OnUnsupported {
     const DEFAULT: Self = OnUnsupported::Abort;
 
     fn from_config(ui: &Ui, config: &Config) -> Self {
         match config
             .get(b"rhg", b"on-unsupported")
             .map(|value| value.to_ascii_lowercase())
             .as_deref()
         {
             Some(b"abort") => OnUnsupported::Abort,
             Some(b"abort-silent") => OnUnsupported::AbortSilent,
             Some(b"fallback") => OnUnsupported::Fallback {
                 executable: config
                     .get(b"rhg", b"fallback-executable")
                     .unwrap_or_else(|| {
                         exit_no_fallback(
                             ui,
                             Self::Abort,
                             Err(CommandError::abort(
                                 "abort: 'rhg.on-unsupported=fallback' without \
                                 'rhg.fallback-executable' set."
                             )),
                             false,
                         )
                     })
                     .to_owned(),
             },
             None => Self::DEFAULT,
             Some(_) => {
                 // TODO: warn about unknown config value
                 Self::DEFAULT
             }
         }
     }
 }
 
 const SUPPORTED_EXTENSIONS: &[&[u8]] = &[b"blackbox", b"share"];
 
 fn check_extensions(config: &Config) -> Result<(), CommandError> {
     let enabled = config.get_section_keys(b"extensions");
 
     let mut unsupported = enabled;
     for supported in SUPPORTED_EXTENSIONS {
         unsupported.remove(supported);
     }
 
     if let Some(ignored_list) = config.get_list(b"rhg", b"ignored-extensions")
     {
         for ignored in ignored_list {
             unsupported.remove(ignored.as_slice());
         }
     }
 
     if unsupported.is_empty() {
         Ok(())
     } else {
         Err(CommandError::UnsupportedFeature {
             message: format_bytes!(
                 b"extensions: {} (consider adding them to 'rhg.ignored-extensions' config)",
                 join(unsupported, b", ")
             ),
         })
     }
 }
+
+fn check_unsupported(config: &Config) -> Result<(), CommandError> {
+    check_extensions(config)?;
+
+    if std::env::var_os("HG_PENDING").is_some() {
+        // TODO: only if the value is `== repo.working_directory`?
+        // What about relative v.s. absolute paths?
+        Err(CommandError::unsupported("$HG_PENDING"))?
+    }
+
+    Ok(())
+}

tests/test-import.t

@@ -1,2094 +1,2090 b''
-TODO: fix rhg bugs that make this test fail when status is enabled
-  $ unset RHG_STATUS
-
-
   $ hg init a
   $ mkdir a/d1
   $ mkdir a/d1/d2
   $ echo line 1 > a/a
   $ echo line 1 > a/d1/d2/a
   $ hg --cwd a ci -Ama
   adding a
   adding d1/d2/a
 
   $ echo line 2 >> a/a
   $ hg --cwd a ci -u someone -d '1 0' -m'second change'
 
 import with no args:
 
   $ hg --cwd a import
   abort: need at least one patch to import
   [10]
 
 generate patches for the test
 
   $ hg --cwd a export tip > exported-tip.patch
   $ hg --cwd a diff -r0:1 > diffed-tip.patch
 
 
 import exported patch
 (this also tests that editor is not invoked, if the patch contains the
 commit message and '--edit' is not specified)
 
   $ hg clone -r0 a b
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 2 changes to 2 files
   new changesets 80971e65b431
   updating to branch default
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ HGEDITOR=cat hg --cwd b import --debug ../exported-tip.patch
   applying ../exported-tip.patch
   Subject: 
   
   Content-Type: text/plain
   found patch at byte 202
   patch generated by hg export
   From: someone
   Date: 1 0
   Node ID: 1d4bd90af0e43687763d158dfa83ff2a4b6c0c32
   message:
   second change
   patching file a
   committing files:
   a
   committing manifest
   committing changelog
   created 1d4bd90af0e4
   updating the branch cache
 
 message and committer and date should be same
 
   $ hg --cwd b tip
   changeset:   1:1d4bd90af0e4
   tag:         tip
   user:        someone
   date:        Thu Jan 01 00:00:01 1970 +0000
   summary:     second change
   
   $ rm -r b
 
 
 import exported patch with external patcher
 (this also tests that editor is invoked, if the '--edit' is specified,
 regardless of the commit message in the patch)
 
   $ cat > dummypatch.py <<EOF
   > from __future__ import print_function
   > print('patching file a')
   > open('a', 'wb').write(b'line2\n')
   > EOF
   $ hg clone -r0 a b
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 2 changes to 2 files
   new changesets 80971e65b431
   updating to branch default
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ HGEDITOR=cat hg --config ui.patch="\"$PYTHON\" ../dummypatch.py" --cwd b import --edit ../exported-tip.patch
   applying ../exported-tip.patch
   second change
   
   
   HG: Enter commit message.  Lines beginning with 'HG:' are removed.
   HG: Leave message empty to abort commit.
   HG: --
   HG: user: someone
   HG: branch 'default'
   HG: changed a
   $ cat b/a
   line2
   $ rm -r b
 
 
 import of plain diff should fail without message
 (this also tests that editor is invoked, if the patch doesn't contain
 the commit message, regardless of '--edit')
 
   $ hg clone -r0 a b
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 2 changes to 2 files
   new changesets 80971e65b431
   updating to branch default
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cat > $TESTTMP/editor.sh <<EOF
   > env | grep HGEDITFORM
   > cat \$1
   > EOF
   $ HGEDITOR="sh $TESTTMP/editor.sh" hg --cwd b import ../diffed-tip.patch
   applying ../diffed-tip.patch
   HGEDITFORM=import.normal.normal
   
   
   HG: Enter commit message.  Lines beginning with 'HG:' are removed.
   HG: Leave message empty to abort commit.
   HG: --
   HG: user: test
   HG: branch 'default'
   HG: changed a
   abort: empty commit message
   [10]
 
 Test avoiding editor invocation at applying the patch with --exact,
 even if commit message is empty
 
   $ echo a >> b/a
   $ hg --cwd b commit -m ' '
   $ hg --cwd b tip -T "{node}\n"
   d8804f3f5396d800812f579c8452796a5993bdb2
   $ hg --cwd b export -o ../empty-log.diff .
   $ hg --cwd b update -q -C ".^1"
   $ hg --cwd b --config extensions.strip= strip -q tip
   $ HGEDITOR=cat hg --cwd b import --exact ../empty-log.diff
   applying ../empty-log.diff
   $ hg --cwd b tip -T "{node}\n"
   d8804f3f5396d800812f579c8452796a5993bdb2
 
   $ rm -r b
 
 
 import of plain diff should be ok with message
 
   $ hg clone -r0 a b
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 2 changes to 2 files
   new changesets 80971e65b431
   updating to branch default
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg --cwd b import -mpatch ../diffed-tip.patch
   applying ../diffed-tip.patch
   $ rm -r b
 
 
 import of plain diff with specific date and user
 (this also tests that editor is not invoked, if
 '--message'/'--logfile' is specified and '--edit' is not)
 
   $ hg clone -r0 a b
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 2 changes to 2 files
   new changesets 80971e65b431
   updating to branch default
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg --cwd b import -mpatch -d '1 0' -u '[e-mail]' ../diffed-tip.patch
   applying ../diffed-tip.patch
   $ hg -R b tip -pv
   changeset:   1:ca68f19f3a40
   tag:         tip
   user:        [e-mail]
   date:        Thu Jan 01 00:00:01 1970 +0000
   files:       a
   description:
   patch
   
   
   diff -r 80971e65b431 -r ca68f19f3a40 a
   --- a/a	Thu Jan 01 00:00:00 1970 +0000
   +++ b/a	Thu Jan 01 00:00:01 1970 +0000
   @@ -1,1 +1,2 @@
    line 1
   +line 2
   
   $ rm -r b
 
 
 import of plain diff should be ok with --no-commit
 (this also tests that editor is not invoked, if '--no-commit' is
 specified, regardless of '--edit')
 
   $ hg clone -r0 a b
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 2 changes to 2 files
   new changesets 80971e65b431
   updating to branch default
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ HGEDITOR=cat hg --cwd b import --no-commit --edit ../diffed-tip.patch
   applying ../diffed-tip.patch
   $ hg --cwd b diff --nodates
   diff -r 80971e65b431 a
   --- a/a
   +++ b/a
   @@ -1,1 +1,2 @@
    line 1
   +line 2
   $ rm -r b
 
 
 import of malformed plain diff should fail
 
   $ hg clone -r0 a b
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 2 changes to 2 files
   new changesets 80971e65b431
   updating to branch default
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ sed 's/1,1/foo/' < diffed-tip.patch > broken.patch
   $ hg --cwd b import -mpatch ../broken.patch
   applying ../broken.patch
   abort: bad hunk #1
   [255]
   $ rm -r b
 
 hg -R repo import
 put the clone in a subdir - having a directory named "a"
 used to hide a bug.
 
   $ mkdir dir
   $ hg clone -r0 a dir/b
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 2 changes to 2 files
   new changesets 80971e65b431
   updating to branch default
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cd dir
   $ hg -R b import ../exported-tip.patch
   applying ../exported-tip.patch
   $ cd ..
   $ rm -r dir
 
 
 import from stdin
 
   $ hg clone -r0 a b
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 2 changes to 2 files
   new changesets 80971e65b431
   updating to branch default
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg --cwd b import - < exported-tip.patch
   applying patch from stdin
   $ rm -r b
 
 
 import two patches in one stream
 
   $ hg init b
   $ hg --cwd a export 0:tip | hg --cwd b import -
   applying patch from stdin
   $ hg --cwd a id
   1d4bd90af0e4 tip
   $ hg --cwd b id
   1d4bd90af0e4 tip
   $ rm -r b
 
 
 override commit message
 
   $ hg clone -r0 a b
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 2 changes to 2 files
   new changesets 80971e65b431
   updating to branch default
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg --cwd b import -m 'override' - < exported-tip.patch
   applying patch from stdin
   $ hg --cwd b tip | grep override
   summary:     override
   $ rm -r b
 
   $ cat > mkmsg.py <<EOF
   > import email.message
   > import sys
   > msg = email.message.Message()
   > patch = open(sys.argv[1], 'rb').read()
   > msg.set_payload(b'email commit message\n' + patch)
   > msg['Subject'] = 'email patch'
   > msg['From'] = 'email patcher'
   > open(sys.argv[2], 'wb').write(bytes(msg))
   > EOF
 
 
 plain diff in email, subject, message body
 
   $ hg clone -r0 a b
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 2 changes to 2 files
   new changesets 80971e65b431
   updating to branch default
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ "$PYTHON" mkmsg.py diffed-tip.patch msg.patch
   $ hg --cwd b import ../msg.patch
   applying ../msg.patch
   $ hg --cwd b tip | grep email
   user:        email patcher
   summary:     email patch
   $ rm -r b
 
 
 plain diff in email, no subject, message body
 
   $ hg clone -r0 a b
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 2 changes to 2 files
   new changesets 80971e65b431
   updating to branch default
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ grep -v '^Subject:' msg.patch | hg --cwd b import -
   applying patch from stdin
   $ rm -r b
 
 
 plain diff in email, subject, no message body
 
   $ hg clone -r0 a b
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 2 changes to 2 files
   new changesets 80971e65b431
   updating to branch default
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ grep -v '^email ' msg.patch | hg --cwd b import -
   applying patch from stdin
   $ rm -r b
 
 
 plain diff in email, no subject, no message body, should fail
 
   $ hg clone -r0 a b
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 2 changes to 2 files
   new changesets 80971e65b431
   updating to branch default
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ egrep -v '^(Subject|email)' msg.patch | hg --cwd b import -
   applying patch from stdin
   abort: empty commit message
   [10]
   $ rm -r b
 
 
 hg export in email, should use patch header
 
   $ hg clone -r0 a b
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 2 changes to 2 files
   new changesets 80971e65b431
   updating to branch default
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ "$PYTHON" mkmsg.py exported-tip.patch msg.patch
   $ cat msg.patch | hg --cwd b import -
   applying patch from stdin
   $ hg --cwd b tip | grep second
   summary:     second change
   $ rm -r b
 
 hg email --plain, should read X-Mercurial-Node header
 
   $ cat >> a/.hg/hgrc << EOF
   > [extensions]
   > patchbomb =
   > [email]
   > from = foo
   > cc = foo
   > to = bar
   > EOF
   $ hg --cwd a email -m ../tip-plain.mbox --plain --date '1970-1-1 0:1' tip
   this patch series consists of 1 patches.
   
   
   sending [PATCH] second change ...
 
   $ hg clone -r0 a b -q
   $ hg --cwd b import --debug ../tip-plain.mbox
   applying ../tip-plain.mbox
   Node ID: 1d4bd90af0e43687763d158dfa83ff2a4b6c0c32
   Subject: second change
   From: foo
   Content-Type: text/plain
   found patch at byte 0
   message:
   second change
   patching file a
   committing files:
   a
   committing manifest
   committing changelog
   created de620f6fe949
   updating the branch cache
   $ hg --cwd b tip
   changeset:   1:de620f6fe949
   tag:         tip
   user:        foo
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     second change
   
   $ hg --cwd b phase tip
   1: draft
   $ rm -r b
 
 
 hg import --secret
 
   $ hg clone -r0 a b -q
   $ hg --cwd b import --no-commit --secret ../exported-tip.patch
   abort: cannot specify both --no-commit and --secret
   [10]
   $ hg --cwd b import --secret ../exported-tip.patch
   applying ../exported-tip.patch
   $ hg --cwd b diff -c . --nodates
   diff -r 80971e65b431 -r 1d4bd90af0e4 a
   --- a/a
   +++ b/a
   @@ -1,1 +1,2 @@
    line 1
   +line 2
   $ hg --cwd b phase
   1: secret
   $ hg --cwd b --config extensions.strip= strip 1 --no-backup --quiet
   $ HGEDITOR=cat hg --cwd b import --secret --edit ../exported-tip.patch
   applying ../exported-tip.patch
   second change
   
   
   HG: Enter commit message.  Lines beginning with 'HG:' are removed.
   HG: Leave message empty to abort commit.
   HG: --
   HG: user: someone
   HG: branch 'default'
   HG: changed a
   $ hg --cwd b diff -c . --nodates
   diff -r 80971e65b431 -r 1d4bd90af0e4 a
   --- a/a
   +++ b/a
   @@ -1,1 +1,2 @@
    line 1
   +line 2
   $ hg --cwd b phase
   1: secret
   $ hg --cwd b --config extensions.strip= strip 1 --no-backup --quiet
   $ hg --cwd b import --bypass --secret ../exported-tip.patch
   applying ../exported-tip.patch
   $ hg --cwd b phase -r tip
   1: secret
   $ hg --cwd b --config extensions.strip= strip 1 --no-backup --quiet
   $ rm -r b
 
 
 subject: duplicate detection, removal of [PATCH]
 The '---' tests the gitsendmail handling without proper mail headers
 
   $ cat > mkmsg2.py <<EOF
   > import email.message
   > import sys
   > msg = email.message.Message()
   > patch = open(sys.argv[1], 'rb').read()
   > msg.set_payload(b'email patch\n\nnext line\n---\n' + patch)
   > msg['Subject'] = '[PATCH] email patch'
   > msg['From'] = 'email patcher'
   > open(sys.argv[2], 'wb').write(bytes(msg))
   > EOF
 
 
 plain diff in email, [PATCH] subject, message body with subject
 
   $ hg clone -r0 a b
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 2 changes to 2 files
   new changesets 80971e65b431
   updating to branch default
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ "$PYTHON" mkmsg2.py diffed-tip.patch msg.patch
   $ cat msg.patch | hg --cwd b import -
   applying patch from stdin
   $ hg --cwd b tip --template '{desc}\n'
   email patch
   
   next line
   $ rm -r b
 
 
 Issue963: Parent of working dir incorrect after import of multiple
 patches and rollback
 
 We weren't backing up the correct dirstate file when importing many
 patches: import patch1 patch2; rollback
 
   $ echo line 3 >> a/a
   $ hg --cwd a ci -m'third change'
   $ hg --cwd a export -o '../patch%R' 1 2
   $ hg clone -qr0 a b
   $ hg --cwd b parents --template 'parent: {rev}\n'
   parent: 0
   $ hg --cwd b import -v ../patch1 ../patch2
   applying ../patch1
   patching file a
   committing files:
   a
   committing manifest
   committing changelog
   created 1d4bd90af0e4
   applying ../patch2
   patching file a
   committing files:
   a
   committing manifest
   committing changelog
   created 6d019af21222
   $ hg --cwd b rollback
   repository tip rolled back to revision 0 (undo import)
   working directory now based on revision 0
   $ hg --cwd b parents --template 'parent: {rev}\n'
   parent: 0
 
 Test that "hg rollback" doesn't restore dirstate to one at the
 beginning of the rolled back transaction in not-"parent-gone" case.
 
 invoking pretxncommit hook will cause marking '.hg/dirstate' as a file
 to be restored when rolling back, after DirstateTransactionPlan (see wiki
 page for detail).
 
   $ hg --cwd b branch -q foobar
   $ hg --cwd b commit -m foobar
   $ hg --cwd b update 0 -q
   $ hg --cwd b import ../patch1 ../patch2 --config hooks.pretxncommit=true
   applying ../patch1
   applying ../patch2
   $ hg --cwd b update -q 1
   $ hg --cwd b rollback -q
   $ hg --cwd b parents --template 'parent: {rev}\n'
   parent: 1
 
   $ hg --cwd b update -q -C 0
   $ hg --cwd b --config extensions.strip= strip -q 1
 
 Test visibility of in-memory dirstate changes inside transaction to
 external process
 
   $ echo foo > a/foo
   $ hg --cwd a commit -A -m 'adding foo' foo
   $ hg --cwd a export -o '../patch%R' 3
 
   $ cat > $TESTTMP/checkvisibility.sh <<EOF
   > echo "===="
   > hg parents --template "VISIBLE {rev}:{node|short}\n"
   > hg status -amr
   > # test that pending changes are hidden
   > unset HG_PENDING
   > hg parents --template "ACTUAL  {rev}:{node|short}\n"
   > hg status -amr
   > echo "===="
   > EOF
 
 == test visibility to external editor
 
   $ (cd b && sh "$TESTTMP/checkvisibility.sh")
   ====
   VISIBLE 0:80971e65b431
   ACTUAL  0:80971e65b431
   ====
 
   $ HGEDITOR="sh $TESTTMP/checkvisibility.sh" hg --cwd b import -v --edit ../patch1 ../patch2 ../patch3
   applying ../patch1
   patching file a
   ====
   VISIBLE 0:80971e65b431
   M a
   ACTUAL  0:80971e65b431
   M a
   ====
   committing files:
   a
   committing manifest
   committing changelog
   created 1d4bd90af0e4
   applying ../patch2
   patching file a
   ====
   VISIBLE 1:1d4bd90af0e4
   M a
   ACTUAL  0:80971e65b431
   M a
   ====
   committing files:
   a
   committing manifest
   committing changelog
   created 6d019af21222
   applying ../patch3
   patching file foo
   adding foo
   ====
   VISIBLE 2:6d019af21222
   A foo
   ACTUAL  0:80971e65b431
   M a
   ====
   committing files:
   foo
   committing manifest
   committing changelog
   created 55e3f75b2378
 
   $ hg --cwd b rollback -q
 
 (content of file "a" is already changed and it should be recognized as
 "M", even though dirstate is restored to one before "hg import")
 
   $ (cd b && sh "$TESTTMP/checkvisibility.sh")
   ====
   VISIBLE 0:80971e65b431
   M a
   ACTUAL  0:80971e65b431
   M a
   ====
   $ hg --cwd b revert --no-backup a
   $ rm -f b/foo
 
 == test visibility to precommit external hook
 
   $ cat >> b/.hg/hgrc <<EOF
   > [hooks]
   > precommit.visibility = sh $TESTTMP/checkvisibility.sh
   > EOF
 
   $ (cd b && sh "$TESTTMP/checkvisibility.sh")
   ====
   VISIBLE 0:80971e65b431
   ACTUAL  0:80971e65b431
   ====
 
   $ hg --cwd b import ../patch1 ../patch2 ../patch3
   applying ../patch1
   ====
   VISIBLE 0:80971e65b431
   M a
   ACTUAL  0:80971e65b431
   M a
   ====
   applying ../patch2
   ====
   VISIBLE 1:1d4bd90af0e4
   M a
   ACTUAL  0:80971e65b431
   M a
   ====
   applying ../patch3
   ====
   VISIBLE 2:6d019af21222
   A foo
   ACTUAL  0:80971e65b431
   M a
   ====
 
   $ hg --cwd b rollback -q
   $ (cd b && sh "$TESTTMP/checkvisibility.sh")
   ====
   VISIBLE 0:80971e65b431
   M a
   ACTUAL  0:80971e65b431
   M a
   ====
   $ hg --cwd b revert --no-backup a
   $ rm -f b/foo
 
   $ cat >> b/.hg/hgrc <<EOF
   > [hooks]
   > precommit.visibility =
   > EOF
 
 == test visibility to pretxncommit external hook
 
   $ cat >> b/.hg/hgrc <<EOF
   > [hooks]
   > pretxncommit.visibility = sh $TESTTMP/checkvisibility.sh
   > EOF
 
   $ (cd b && sh "$TESTTMP/checkvisibility.sh")
   ====
   VISIBLE 0:80971e65b431
   ACTUAL  0:80971e65b431
   ====
 
   $ hg --cwd b import ../patch1 ../patch2 ../patch3
   applying ../patch1
   ====
   VISIBLE 0:80971e65b431
   M a
   ACTUAL  0:80971e65b431
   M a
   ====
   applying ../patch2
   ====
   VISIBLE 1:1d4bd90af0e4
   M a
   ACTUAL  0:80971e65b431
   M a
   ====
   applying ../patch3
   ====
   VISIBLE 2:6d019af21222
   A foo
   ACTUAL  0:80971e65b431
   M a
   ====
 
   $ hg --cwd b rollback -q
   $ (cd b && sh "$TESTTMP/checkvisibility.sh")
   ====
   VISIBLE 0:80971e65b431
   M a
   ACTUAL  0:80971e65b431
   M a
   ====
   $ hg --cwd b revert --no-backup a
   $ rm -f b/foo
 
   $ cat >> b/.hg/hgrc <<EOF
   > [hooks]
   > pretxncommit.visibility =
   > EOF
 
   $ rm -r b
 
 
 importing a patch in a subdirectory failed at the commit stage
 
   $ echo line 2 >> a/d1/d2/a
   $ hg --cwd a ci -u someoneelse -d '1 0' -m'subdir change'
 
 hg import in a subdirectory
 
   $ hg clone -r0 a b
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 2 changes to 2 files
   new changesets 80971e65b431
   updating to branch default
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg --cwd a export tip > tmp
   $ sed -e 's/d1\/d2\///' < tmp > subdir-tip.patch
   $ dir=`pwd`
   $ cd b/d1/d2 2>&1 > /dev/null
   $ hg import  ../../../subdir-tip.patch
   applying ../../../subdir-tip.patch
   $ cd "$dir"
 
 message should be 'subdir change'
 committer should be 'someoneelse'
 
   $ hg --cwd b tip
   changeset:   1:3577f5aea227
   tag:         tip
   user:        someoneelse
   date:        Thu Jan 01 00:00:01 1970 +0000
   summary:     subdir change
   
 
 should be empty
 
   $ hg --cwd b status
 
 
 Test fuzziness (ambiguous patch location, fuzz=2)
 
   $ hg init fuzzy
   $ cd fuzzy
   $ echo line1 > a
   $ echo line0 >> a
   $ echo line3 >> a
   $ hg ci -Am adda
   adding a
   $ echo line1 > a
   $ echo line2 >> a
   $ echo line0 >> a
   $ echo line3 >> a
   $ hg ci -m change a
   $ hg export tip > fuzzy-tip.patch
   $ hg up -C 0
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ echo line1 > a
   $ echo line0 >> a
   $ echo line1 >> a
   $ echo line0 >> a
   $ hg ci -m brancha
   created new head
   $ hg import --config patch.fuzz=0 -v fuzzy-tip.patch
   applying fuzzy-tip.patch
   patching file a
   Hunk #1 FAILED at 0
   1 out of 1 hunks FAILED -- saving rejects to file a.rej
   abort: patch failed to apply
   [255]
   $ hg import --no-commit -v fuzzy-tip.patch
   applying fuzzy-tip.patch
   patching file a
   Hunk #1 succeeded at 2 with fuzz 1 (offset 0 lines).
   applied to working directory
   $ hg revert -a
   reverting a
 
 Test --exact failure
 
   $ sed 's/^# Parent .*/# Parent '"`hg log -r. -T '{node}'`"'/' \
   > < fuzzy-tip.patch > fuzzy-reparent.patch
   $ hg import --config patch.fuzz=0 --exact fuzzy-reparent.patch
   applying fuzzy-reparent.patch
   patching file a
   Hunk #1 FAILED at 0
   1 out of 1 hunks FAILED -- saving rejects to file a.rej
   abort: patch failed to apply
   [255]
   $ hg up -qC
   $ hg import --config patch.fuzz=2 --exact fuzzy-reparent.patch
   applying fuzzy-reparent.patch
   patching file a
   Hunk #1 succeeded at 2 with fuzz 1 (offset 0 lines).
   transaction abort!
   rollback completed
   abort: patch is damaged or loses information
   [255]
   $ hg up -qC
 
   $ grep '^#' fuzzy-tip.patch > empty.patch
   $ cat <<'EOF' >> empty.patch
   > change
   > 
   > diff -r bb90ef1daa38 -r 0e9b883378d4 a
   > --- a/a	Thu Jan 01 00:00:00 1970 +0000
   > --- b/a	Thu Jan 01 00:00:00 1970 +0000
   > EOF
   $ hg import --exact empty.patch
   applying empty.patch
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   abort: patch is damaged or loses information
   [255]
   $ hg up -qC
 
 import with --no-commit should have written .hg/last-message.txt
 
   $ cat .hg/last-message.txt
   change (no-eol)
 
 
 test fuzziness with eol=auto
 
   $ hg --config patch.eol=auto import --no-commit -v fuzzy-tip.patch
   applying fuzzy-tip.patch
   patching file a
   Hunk #1 succeeded at 2 with fuzz 1 (offset 0 lines).
   applied to working directory
   $ cd ..
 
 
 Test hunk touching empty files (issue906)
 
   $ hg init empty
   $ cd empty
   $ touch a
   $ touch b1
   $ touch c1
   $ echo d > d
   $ hg ci -Am init
   adding a
   adding b1
   adding c1
   adding d
   $ echo a > a
   $ echo b > b1
   $ hg mv b1 b2
   $ echo c > c1
   $ hg copy c1 c2
   $ rm d
   $ touch d
   $ hg diff --git
   diff --git a/a b/a
   --- a/a
   +++ b/a
   @@ -0,0 +1,1 @@
   +a
   diff --git a/b1 b/b2
   rename from b1
   rename to b2
   --- a/b1
   +++ b/b2
   @@ -0,0 +1,1 @@
   +b
   diff --git a/c1 b/c1
   --- a/c1
   +++ b/c1
   @@ -0,0 +1,1 @@
   +c
   diff --git a/c1 b/c2
   copy from c1
   copy to c2
   --- a/c1
   +++ b/c2
   @@ -0,0 +1,1 @@
   +c
   diff --git a/d b/d
   --- a/d
   +++ b/d
   @@ -1,1 +0,0 @@
   -d
   $ hg ci -m empty
   $ hg export --git tip > empty.diff
   $ hg up -C 0
   4 files updated, 0 files merged, 2 files removed, 0 files unresolved
   $ hg import empty.diff
   applying empty.diff
   $ for name in a b1 b2 c1 c2 d; do
   >   echo % $name file
   >   test -f $name && cat $name
   >   done
   % a file
   a
   % b1 file
   % b2 file
   b
   % c1 file
   c
   % c2 file
   c
   % d file
   $ cd ..
 
 
 Test importing a patch ending with a binary file removal
 
   $ hg init binaryremoval
   $ cd binaryremoval
   $ echo a > a
   $ "$PYTHON" -c "open('b', 'wb').write(b'a\x00b')"
   $ hg ci -Am addall
   adding a
   adding b
   $ hg rm a
   $ hg rm b
   $ hg st
   R a
   R b
   $ hg ci -m remove
   $ hg export --git . > remove.diff
   $ cat remove.diff | grep git
   diff --git a/a b/a
   diff --git a/b b/b
   $ hg up -C 0
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg import remove.diff
   applying remove.diff
   $ hg manifest
   $ cd ..
 
 
 Issue927: test update+rename with common name
 
   $ hg init t
   $ cd t
   $ touch a
   $ hg ci -Am t
   adding a
   $ echo a > a
 
 Here, bfile.startswith(afile)
 
   $ hg copy a a2
   $ hg ci -m copya
   $ hg export --git tip > copy.diff
   $ hg up -C 0
   1 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg import copy.diff
   applying copy.diff
 
 a should contain an 'a'
 
   $ cat a
   a
 
 and a2 should have duplicated it
 
   $ cat a2
   a
   $ cd ..
 
 
 test -p0
 
   $ hg init p0
   $ cd p0
   $ echo a > a
   $ hg ci -Am t
   adding a
   $ hg import -p foo
   abort: invalid value 'foo' for option -p, expected int
   [10]
   $ hg import -p0 - << EOF
   > foobar
   > --- a	Sat Apr 12 22:43:58 2008 -0400
   > +++ a	Sat Apr 12 22:44:05 2008 -0400
   > @@ -1,1 +1,1 @@
   > -a
   > +bb
   > EOF
   applying patch from stdin
   $ hg status
   $ cat a
   bb
 
 test --prefix
 
   $ mkdir -p dir/dir2
   $ echo b > dir/dir2/b
   $ hg ci -Am b
   adding dir/dir2/b
   $ hg import -p2 --prefix dir - << EOF
   > foobar
   > --- drop1/drop2/dir2/b
   > +++ drop1/drop2/dir2/b
   > @@ -1,1 +1,1 @@
   > -b
   > +cc
   > EOF
   applying patch from stdin
   $ hg status
   $ cat dir/dir2/b
   cc
   $ cd ..
 
 
 test paths outside repo root
 
   $ mkdir outside
   $ touch outside/foo
   $ hg init inside
   $ cd inside
   $ hg import - <<EOF
   > diff --git a/a b/b
   > rename from ../outside/foo
   > rename to bar
   > EOF
   applying patch from stdin
   abort: path contains illegal component: ../outside/foo
   [255]
   $ cd ..
 
 
 test import with similarity and git and strip (issue295 et al.)
 
   $ hg init sim
   $ cd sim
   $ echo 'this is a test' > a
   $ hg ci -Ama
   adding a
   $ cat > ../rename.diff <<EOF
   > diff --git a/foo/a b/foo/a
   > deleted file mode 100644
   > --- a/foo/a
   > +++ /dev/null
   > @@ -1,1 +0,0 @@
   > -this is a test
   > diff --git a/foo/b b/foo/b
   > new file mode 100644
   > --- /dev/null
   > +++ b/foo/b
   > @@ -0,0 +1,2 @@
   > +this is a test
   > +foo
   > EOF
   $ hg import --no-commit -v -s 1 ../rename.diff -p2
   applying ../rename.diff
   patching file a
   patching file b
   adding b
   recording removal of a as rename to b (88% similar)
   applied to working directory
   $ echo 'mod b' > b
   $ hg st -C
   A b
     a
   R a
   $ hg revert -a
   forgetting b
   undeleting a
   $ cat b
   mod b
   $ rm b
   $ hg import --no-commit -v -s 100 ../rename.diff -p2
   applying ../rename.diff
   patching file a
   patching file b
   adding b
   applied to working directory
   $ hg st -C
   A b
   R a
   $ cd ..
 
 
 Issue1495: add empty file from the end of patch
 
   $ hg init addemptyend
   $ cd addemptyend
   $ touch a
   $ hg addremove
   adding a
   $ hg ci -m "commit"
   $ cat > a.patch <<EOF
   > add a, b
   > diff --git a/a b/a
   > --- a/a
   > +++ b/a
   > @@ -0,0 +1,1 @@
   > +a
   > diff --git a/b b/b
   > new file mode 100644
   > EOF
   $ hg import --no-commit a.patch
   applying a.patch
 
 apply a good patch followed by an empty patch (mainly to ensure
 that dirstate is *not* updated when import crashes)
   $ hg update -q -C .
   $ rm b
   $ touch empty.patch
   $ hg import a.patch empty.patch
   applying a.patch
   applying empty.patch
   transaction abort!
   rollback completed
   abort: empty.patch: no diffs found
   [10]
   $ hg tip --template '{rev}  {desc|firstline}\n'
   0  commit
   $ hg -q status
   M a
   $ cd ..
 
 create file when source is not /dev/null
 
   $ cat > create.patch <<EOF
   > diff -Naur proj-orig/foo proj-new/foo
   > --- proj-orig/foo       1969-12-31 16:00:00.000000000 -0800
   > +++ proj-new/foo        2009-07-17 16:50:45.801368000 -0700
   > @@ -0,0 +1,1 @@
   > +a
   > EOF
 
 some people have patches like the following too
 
   $ cat > create2.patch <<EOF
   > diff -Naur proj-orig/foo proj-new/foo
   > --- proj-orig/foo.orig  1969-12-31 16:00:00.000000000 -0800
   > +++ proj-new/foo        2009-07-17 16:50:45.801368000 -0700
   > @@ -0,0 +1,1 @@
   > +a
   > EOF
   $ hg init oddcreate
   $ cd oddcreate
   $ hg import --no-commit ../create.patch
   applying ../create.patch
   $ cat foo
   a
   $ rm foo
   $ hg revert foo
   $ hg import --no-commit ../create2.patch
   applying ../create2.patch
   $ cat foo
   a
 
   $ cd ..
 
 Issue1859: first line mistaken for email headers
 
   $ hg init emailconfusion
   $ cd emailconfusion
   $ cat > a.patch <<EOF
   > module: summary
   > 
   > description
   > 
   > 
   > diff -r 000000000000 -r 9b4c1e343b55 test.txt
   > --- /dev/null
   > +++ b/a
   > @@ -0,0 +1,1 @@
   > +a
   > EOF
   $ hg import -d '0 0' a.patch
   applying a.patch
   $ hg parents -v
   changeset:   0:5a681217c0ad
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   files:       a
   description:
   module: summary
   
   description
   
   
   $ cd ..
 
 
 in commit message
 
   $ hg init commitconfusion
   $ cd commitconfusion
   $ cat > a.patch <<EOF
   > module: summary
   > 
   > --- description
   > 
   > diff --git a/a b/a
   > new file mode 100644
   > --- /dev/null
   > +++ b/a
   > @@ -0,0 +1,1 @@
   > +a
   > EOF
   > hg import -d '0 0' a.patch
   > hg parents -v
   > cd ..
   > 
   > echo '% tricky header splitting'
   > cat > trickyheaders.patch <<EOF
   > From: User A <user@a>
   > Subject: [PATCH] from: tricky!
   > 
   > # HG changeset patch
   > # User User B
   > # Date 1266264441 18000
   > # Branch stable
   > # Node ID f2be6a1170ac83bf31cb4ae0bad00d7678115bc0
   > # Parent  0000000000000000000000000000000000000000
   > from: tricky!
   > 
   > That is not a header.
   > 
   > diff -r 000000000000 -r f2be6a1170ac foo
   > --- /dev/null
   > +++ b/foo
   > @@ -0,0 +1,1 @@
   > +foo
   > EOF
   applying a.patch
   changeset:   0:f34d9187897d
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   files:       a
   description:
   module: summary
   
   
   % tricky header splitting
 
   $ hg init trickyheaders
   $ cd trickyheaders
   $ hg import -d '0 0' ../trickyheaders.patch
   applying ../trickyheaders.patch
   $ hg export --git tip
   # HG changeset patch
   # User User B
   # Date 0 0
   #      Thu Jan 01 00:00:00 1970 +0000
   # Node ID eb56ab91903632294ac504838508cb370c0901d2
   # Parent  0000000000000000000000000000000000000000
   from: tricky!
   
   That is not a header.
   
   diff --git a/foo b/foo
   new file mode 100644
   --- /dev/null
   +++ b/foo
   @@ -0,0 +1,1 @@
   +foo
   $ cd ..
 
 
 Issue2102: hg export and hg import speak different languages
 
   $ hg init issue2102
   $ cd issue2102
   $ mkdir -p src/cmd/gc
   $ touch src/cmd/gc/mksys.bash
   $ hg ci -Am init
   adding src/cmd/gc/mksys.bash
   $ hg import - <<EOF
   > # HG changeset patch
   > # User Rob Pike
   > # Date 1216685449 25200
   > # Node ID 03aa2b206f499ad6eb50e6e207b9e710d6409c98
   > # Parent  93d10138ad8df586827ca90b4ddb5033e21a3a84
   > help management of empty pkg and lib directories in perforce
   > 
   > R=gri
   > DELTA=4  (4 added, 0 deleted, 0 changed)
   > OCL=13328
   > CL=13328
   > 
   > diff --git a/lib/place-holder b/lib/place-holder
   > new file mode 100644
   > --- /dev/null
   > +++ b/lib/place-holder
   > @@ -0,0 +1,2 @@
   > +perforce does not maintain empty directories.
   > +this file helps.
   > diff --git a/pkg/place-holder b/pkg/place-holder
   > new file mode 100644
   > --- /dev/null
   > +++ b/pkg/place-holder
   > @@ -0,0 +1,2 @@
   > +perforce does not maintain empty directories.
   > +this file helps.
   > diff --git a/src/cmd/gc/mksys.bash b/src/cmd/gc/mksys.bash
   > old mode 100644
   > new mode 100755
   > EOF
   applying patch from stdin
 
 #if execbit
 
   $ hg sum
   parent: 1:d59915696727 tip
    help management of empty pkg and lib directories in perforce
   branch: default
   commit: (clean)
   update: (current)
   phases: 2 draft
 
   $ hg diff --git -c tip
   diff --git a/lib/place-holder b/lib/place-holder
   new file mode 100644
   --- /dev/null
   +++ b/lib/place-holder
   @@ -0,0 +1,2 @@
   +perforce does not maintain empty directories.
   +this file helps.
   diff --git a/pkg/place-holder b/pkg/place-holder
   new file mode 100644
   --- /dev/null
   +++ b/pkg/place-holder
   @@ -0,0 +1,2 @@
   +perforce does not maintain empty directories.
   +this file helps.
   diff --git a/src/cmd/gc/mksys.bash b/src/cmd/gc/mksys.bash
   old mode 100644
   new mode 100755
 
 #else
 
   $ hg sum
   parent: 1:28f089cc9ccc tip
    help management of empty pkg and lib directories in perforce
   branch: default
   commit: (clean)
   update: (current)
   phases: 2 draft
 
   $ hg diff --git -c tip
   diff --git a/lib/place-holder b/lib/place-holder
   new file mode 100644
   --- /dev/null
   +++ b/lib/place-holder
   @@ -0,0 +1,2 @@
   +perforce does not maintain empty directories.
   +this file helps.
   diff --git a/pkg/place-holder b/pkg/place-holder
   new file mode 100644
   --- /dev/null
   +++ b/pkg/place-holder
   @@ -0,0 +1,2 @@
   +perforce does not maintain empty directories.
   +this file helps.
 
 /* The mode change for mksys.bash is missing here, because on platforms  */
 /* that don't support execbits, mode changes in patches are ignored when */
 /* they are imported. This is obviously also the reason for why the hash */
 /* in the created changeset is different to the one you see above the    */
 /* #else clause */
 
 #endif
   $ cd ..
 
 
 diff lines looking like headers
 
   $ hg init difflineslikeheaders
   $ cd difflineslikeheaders
   $ echo a >a
   $ echo b >b
   $ echo c >c
   $ hg ci -Am1
   adding a
   adding b
   adding c
 
   $ echo "key: value" >>a
   $ echo "key: value" >>b
   $ echo "foo" >>c
   $ hg ci -m2
 
   $ hg up -C 0
   3 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg diff --git -c1 >want
   $ hg diff -c1 | hg import --no-commit -
   applying patch from stdin
   $ hg diff --git >have
   $ diff want have
   $ cd ..
 
 import a unified diff with no lines of context (diff -U0)
 
   $ hg init diffzero
   $ cd diffzero
   $ cat > f << EOF
   > c2
   > c4
   > c5
   > EOF
   $ hg commit -Am0
   adding f
 
   $ hg import --no-commit - << EOF
   > # HG changeset patch
   > # User test
   > # Date 0 0
   > # Node ID f4974ab632f3dee767567b0576c0ec9a4508575c
   > # Parent  8679a12a975b819fae5f7ad3853a2886d143d794
   > 1
   > diff -r 8679a12a975b -r f4974ab632f3 f
   > --- a/f	Thu Jan 01 00:00:00 1970 +0000
   > +++ b/f	Thu Jan 01 00:00:00 1970 +0000
   > @@ -0,0 +1,1 @@
   > +c1
   > @@ -1,0 +3,1 @@
   > +c3
   > @@ -3,1 +4,0 @@
   > -c5
   > EOF
   applying patch from stdin
 
   $ cat f
   c1
   c2
   c3
   c4
 
   $ cd ..
 
 commit message that looks like a diff header (issue1879)
 
   $ hg init headerlikemsg
   $ cd headerlikemsg
   $ touch empty
   $ echo nonempty >> nonempty
   $ hg ci -qAl - <<EOF
   > blah blah
   > diff blah
   > blah blah
   > EOF
   $ hg --config diff.git=1 log -pv
   changeset:   0:c6ef204ef767
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   files:       empty nonempty
   description:
   blah blah
   diff blah
   blah blah
   
   
   diff --git a/empty b/empty
   new file mode 100644
   diff --git a/nonempty b/nonempty
   new file mode 100644
   --- /dev/null
   +++ b/nonempty
   @@ -0,0 +1,1 @@
   +nonempty
   
 
  (without --git, empty file is lost, but commit message should be preserved)
 
   $ hg init plain
   $ hg export 0 | hg -R plain import -
   applying patch from stdin
   $ hg --config diff.git=1 -R plain log -pv
   changeset:   0:60a2d231e71f
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   files:       nonempty
   description:
   blah blah
   diff blah
   blah blah
   
   
   diff --git a/nonempty b/nonempty
   new file mode 100644
   --- /dev/null
   +++ b/nonempty
   @@ -0,0 +1,1 @@
   +nonempty
   
 
  (with --git, patch contents should be fully preserved)
 
   $ hg init git
   $ hg --config diff.git=1 export 0 | hg -R git import -
   applying patch from stdin
   $ hg --config diff.git=1 -R git log -pv
   changeset:   0:c6ef204ef767
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   files:       empty nonempty
   description:
   blah blah
   diff blah
   blah blah
   
   
   diff --git a/empty b/empty
   new file mode 100644
   diff --git a/nonempty b/nonempty
   new file mode 100644
   --- /dev/null
   +++ b/nonempty
   @@ -0,0 +1,1 @@
   +nonempty
   
 
   $ cd ..
 
 no segfault while importing a unified diff which start line is zero but chunk
 size is non-zero
 
   $ hg init startlinezero
   $ cd startlinezero
   $ echo foo > foo
   $ hg commit -Amfoo
   adding foo
 
   $ hg import --no-commit - << EOF
   > diff a/foo b/foo
   > --- a/foo
   > +++ b/foo
   > @@ -0,1 +0,1 @@
   >  foo
   > EOF
   applying patch from stdin
 
   $ cd ..
 
 Test corner case involving fuzz and skew
 
   $ hg init morecornercases
   $ cd morecornercases
 
   $ cat > 01-no-context-beginning-of-file.diff <<EOF
   > diff --git a/a b/a
   > --- a/a
   > +++ b/a
   > @@ -1,0 +1,1 @@
   > +line
   > EOF
 
   $ cat > 02-no-context-middle-of-file.diff <<EOF
   > diff --git a/a b/a
   > --- a/a
   > +++ b/a
   > @@ -1,1 +1,1 @@
   > -2
   > +add some skew
   > @@ -2,0 +2,1 @@
   > +line
   > EOF
 
   $ cat > 03-no-context-end-of-file.diff <<EOF
   > diff --git a/a b/a
   > --- a/a
   > +++ b/a
   > @@ -10,0 +10,1 @@
   > +line
   > EOF
 
   $ cat > 04-middle-of-file-completely-fuzzed.diff <<EOF
   > diff --git a/a b/a
   > --- a/a
   > +++ b/a
   > @@ -1,1 +1,1 @@
   > -2
   > +add some skew
   > @@ -2,2 +2,3 @@
   >  not matching, should fuzz
   >  ... a bit
   > +line
   > EOF
 
   $ cat > a <<EOF
   > 1
   > 2
   > 3
   > 4
   > EOF
   $ hg ci -Am adda a
   $ for p in *.diff; do
   >   hg import -v --no-commit $p
   >   cat a
   >   hg revert -aqC a
   >   # patch -p1 < $p
   >   # cat a
   >   # hg revert -aC a
   > done
   applying 01-no-context-beginning-of-file.diff
   patching file a
   applied to working directory
   1
   line
   2
   3
   4
   applying 02-no-context-middle-of-file.diff
   patching file a
   Hunk #1 succeeded at 2 (offset 1 lines).
   Hunk #2 succeeded at 4 (offset 1 lines).
   applied to working directory
   1
   add some skew
   3
   line
   4
   applying 03-no-context-end-of-file.diff
   patching file a
   Hunk #1 succeeded at 5 (offset -6 lines).
   applied to working directory
   1
   2
   3
   4
   line
   applying 04-middle-of-file-completely-fuzzed.diff
   patching file a
   Hunk #1 succeeded at 2 (offset 1 lines).
   Hunk #2 succeeded at 5 with fuzz 2 (offset 1 lines).
   applied to working directory
   1
   add some skew
   3
   4
   line
   $ cd ..
 
 Test partial application
 ------------------------
 
 prepare a stack of patches depending on each other
 
   $ hg init partial
   $ cd partial
   $ cat << EOF > a
   > one
   > two
   > three
   > four
   > five
   > six
   > seven
   > EOF
   $ hg add a
   $ echo 'b' > b
   $ hg add b
   $ hg commit -m 'initial' -u Babar
   $ cat << EOF > a
   > one
   > two
   > 3
   > four
   > five
   > six
   > seven
   > EOF
   $ hg commit -m 'three' -u Celeste
   $ cat << EOF > a
   > one
   > two
   > 3
   > 4
   > five
   > six
   > seven
   > EOF
   $ hg commit -m 'four' -u Rataxes
   $ cat << EOF > a
   > one
   > two
   > 3
   > 4
   > 5
   > six
   > seven
   > EOF
   $ echo bb >> b
   $ hg commit -m 'five' -u Arthur
   $ echo 'Babar' > jungle
   $ hg add jungle
   $ hg ci -m 'jungle' -u Zephir
   $ echo 'Celeste' >> jungle
   $ hg ci -m 'extended jungle' -u Cornelius
   $ hg log -G --template '{desc|firstline} [{author}] {diffstat}\n'
   @  extended jungle [Cornelius] 1: +1/-0
   |
   o  jungle [Zephir] 1: +1/-0
   |
   o  five [Arthur] 2: +2/-1
   |
   o  four [Rataxes] 1: +1/-1
   |
   o  three [Celeste] 1: +1/-1
   |
   o  initial [Babar] 2: +8/-0
   
 Adding those config options should not change the output of diffstat. Bugfix #4755.
 
   $ hg log -r . --template '{diffstat}\n'
   1: +1/-0
   $ hg log -r . --template '{diffstat}\n' --config diff.git=1 \
   >   --config diff.noprefix=1
   1: +1/-0
 
 Importing with some success and some errors:
 
   $ hg update --rev 'desc(initial)'
   2 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg export --rev 'desc(five)' | hg import --partial -
   applying patch from stdin
   patching file a
   Hunk #1 FAILED at 1
   1 out of 1 hunks FAILED -- saving rejects to file a.rej
   patch applied partially
   (fix the .rej files and run `hg commit --amend`)
   [1]
 
   $ hg log -G --template '{desc|firstline} [{author}] {diffstat}\n'
   @  five [Arthur] 1: +1/-0
   |
   | o  extended jungle [Cornelius] 1: +1/-0
   | |
   | o  jungle [Zephir] 1: +1/-0
   | |
   | o  five [Arthur] 2: +2/-1
   | |
   | o  four [Rataxes] 1: +1/-1
   | |
   | o  three [Celeste] 1: +1/-1
   |/
   o  initial [Babar] 2: +8/-0
   
   $ hg export
   # HG changeset patch
   # User Arthur
   # Date 0 0
   #      Thu Jan 01 00:00:00 1970 +0000
   # Node ID 26e6446bb2526e2be1037935f5fca2b2706f1509
   # Parent  8e4f0351909eae6b9cf68c2c076cb54c42b54b2e
   five
   
   diff -r 8e4f0351909e -r 26e6446bb252 b
   --- a/b	Thu Jan 01 00:00:00 1970 +0000
   +++ b/b	Thu Jan 01 00:00:00 1970 +0000
   @@ -1,1 +1,2 @@
    b
   +bb
   $ hg status -c .
   C a
   C b
   $ ls -A
   .hg
   a
   a.rej
   b
 
 Importing with zero success:
 
   $ hg update --rev 'desc(initial)'
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg export --rev 'desc(four)' | hg import --partial -
   applying patch from stdin
   patching file a
   Hunk #1 FAILED at 0
   1 out of 1 hunks FAILED -- saving rejects to file a.rej
   patch applied partially
   (fix the .rej files and run `hg commit --amend`)
   [1]
 
   $ hg log -G --template '{desc|firstline} [{author}] {diffstat}\n'
   @  four [Rataxes] 0: +0/-0
   |
   | o  five [Arthur] 1: +1/-0
   |/
   | o  extended jungle [Cornelius] 1: +1/-0
   | |
   | o  jungle [Zephir] 1: +1/-0
   | |
   | o  five [Arthur] 2: +2/-1
   | |
   | o  four [Rataxes] 1: +1/-1
   | |
   | o  three [Celeste] 1: +1/-1
   |/
   o  initial [Babar] 2: +8/-0
   
   $ hg export
   # HG changeset patch
   # User Rataxes
   # Date 0 0
   #      Thu Jan 01 00:00:00 1970 +0000
   # Node ID cb9b1847a74d9ad52e93becaf14b98dbcc274e1e
   # Parent  8e4f0351909eae6b9cf68c2c076cb54c42b54b2e
   four
   
   $ hg status -c .
   C a
   C b
   $ ls -A
   .hg
   a
   a.rej
   b
 
 Importing with unknown file:
 
   $ hg update --rev 'desc(initial)'
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg export --rev 'desc("extended jungle")' | hg import --partial -
   applying patch from stdin
   unable to find 'jungle' for patching
   (use '--prefix' to apply patch relative to the current directory)
   1 out of 1 hunks FAILED -- saving rejects to file jungle.rej
   patch applied partially
   (fix the .rej files and run `hg commit --amend`)
   [1]
 
   $ hg log -G --template '{desc|firstline} [{author}] {diffstat}\n'
   @  extended jungle [Cornelius] 0: +0/-0
   |
   | o  four [Rataxes] 0: +0/-0
   |/
   | o  five [Arthur] 1: +1/-0
   |/
   | o  extended jungle [Cornelius] 1: +1/-0
   | |
   | o  jungle [Zephir] 1: +1/-0
   | |
   | o  five [Arthur] 2: +2/-1
   | |
   | o  four [Rataxes] 1: +1/-1
   | |
   | o  three [Celeste] 1: +1/-1
   |/
   o  initial [Babar] 2: +8/-0
   
   $ hg export
   # HG changeset patch
   # User Cornelius
   # Date 0 0
   #      Thu Jan 01 00:00:00 1970 +0000
   # Node ID 1fb1f86bef43c5a75918178f8d23c29fb0a7398d
   # Parent  8e4f0351909eae6b9cf68c2c076cb54c42b54b2e
   extended jungle
   
   $ hg status -c .
   C a
   C b
   $ ls -A
   .hg
   a
   a.rej
   b
   jungle.rej
 
 Importing multiple failing patches:
 
   $ hg update --rev 'desc(initial)'
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ echo 'B' > b # just to make another commit
   $ hg commit -m "a new base"
   created new head
   $ hg export --rev 'desc("four") + desc("extended jungle")' | hg import --partial -
   applying patch from stdin
   patching file a
   Hunk #1 FAILED at 0
   1 out of 1 hunks FAILED -- saving rejects to file a.rej
   patch applied partially
   (fix the .rej files and run `hg commit --amend`)
   [1]
   $ hg log -G --template '{desc|firstline} [{author}] {diffstat}\n'
   @  four [Rataxes] 0: +0/-0
   |
   o  a new base [test] 1: +1/-1
   |
   | o  extended jungle [Cornelius] 0: +0/-0
   |/
   | o  four [Rataxes] 0: +0/-0
   |/
   | o  five [Arthur] 1: +1/-0
   |/
   | o  extended jungle [Cornelius] 1: +1/-0
   | |
   | o  jungle [Zephir] 1: +1/-0
   | |
   | o  five [Arthur] 2: +2/-1
   | |
   | o  four [Rataxes] 1: +1/-1
   | |
   | o  three [Celeste] 1: +1/-1
   |/
   o  initial [Babar] 2: +8/-0
   
   $ hg export
   # HG changeset patch
   # User Rataxes
   # Date 0 0
   #      Thu Jan 01 00:00:00 1970 +0000
   # Node ID a9d7b6d0ffbb4eb12b7d5939250fcd42e8930a1d
   # Parent  f59f8d2e95a8ca5b1b4ca64320140da85f3b44fd
   four
   
   $ hg status -c .
   C a
   C b
 
 Importing some extra header
 ===========================
 
   $ cat > $TESTTMP/parseextra.py <<EOF
   > import mercurial.cmdutil
   > import mercurial.patch
   > 
   > def processfoo(repo, data, extra, opts):
   >     if b'foo' in data:
   >         extra[b'foo'] = data[b'foo']
   > def postimport(ctx):
   >     if b'foo' in ctx.extra():
   >         ctx.repo().ui.write(b'imported-foo: %s\n' % ctx.extra()[b'foo'])
   > 
   > mercurial.patch.patchheadermap.append((b'Foo', b'foo'))
   > mercurial.cmdutil.extrapreimport.append(b'foo')
   > mercurial.cmdutil.extrapreimportmap[b'foo'] = processfoo
   > mercurial.cmdutil.extrapostimport.append(b'foo')
   > mercurial.cmdutil.extrapostimportmap[b'foo'] = postimport
   > EOF
   $ cat >> $HGRCPATH <<EOF
   > [extensions]
   > parseextra=$TESTTMP/parseextra.py
   > EOF
   $ hg up -C tip
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cat > $TESTTMP/foo.patch <<EOF
   > # HG changeset patch
   > # User Rataxes
   > # Date 0 0
   > #      Thu Jan 01 00:00:00 1970 +0000
   > # Foo bar
   > height
   > 
   > --- a/a	Thu Jan 01 00:00:00 1970 +0000
   > +++ b/a	Wed Oct 07 09:17:44 2015 +0000
   > @@ -5,3 +5,4 @@
   >  five
   >  six
   >  seven
   > +heigt
   > EOF
   $ hg import $TESTTMP/foo.patch
   applying $TESTTMP/foo.patch
   imported-foo: bar
   $ hg log --debug -r . | grep extra
   extra:       branch=default
   extra:       foo=bar
 
 Warn the user that paths are relative to the root of
 repository when file not found for patching
 
   $ mkdir filedir
   $ echo "file1" >> filedir/file1
   $ hg add filedir/file1
   $ hg commit -m "file1"
   $ cd filedir
   $ hg import -p 2 - <<EOF
   > # HG changeset patch
   > # User test
   > # Date 0 0
   > file2
   > 
   > diff --git a/filedir/file1 b/filedir/file1
   > --- a/filedir/file1
   > +++ b/filedir/file1
   > @@ -1,1 +1,2 @@
   >  file1
   > +file2
   > EOF
   applying patch from stdin
   unable to find 'file1' for patching
   (use '--prefix' to apply patch relative to the current directory)
   1 out of 1 hunks FAILED -- saving rejects to file file1.rej
   abort: patch failed to apply
   [255]
 
 test import crash (issue5375)
   $ cd ..
   $ hg init repo
   $ cd repo
   $ printf "diff --git a/a b/b\nrename from a\nrename to b" | hg import -
   applying patch from stdin
   a not tracked!
   abort: source file 'a' does not exist
   [255]
 
 test immature end of hunk
 
   $ hg import - <<'EOF'
   > diff --git a/foo b/foo
   > --- a/foo
   > --- b/foo
   > @@ -0,0 +1,1 @@
   > EOF
   applying patch from stdin
   abort: bad hunk #1: incomplete hunk
   [255]
 
   $ hg import - <<'EOF'
   > diff --git a/foo b/foo
   > --- a/foo
   > --- b/foo
   > @@ -0,0 +1,1 @@
   > \ No newline at end of file
   > EOF
   applying patch from stdin
   abort: bad hunk #1: incomplete hunk
   [255]