upstream/mercurial-mirror Files · rust/rhg/src/commands/debugrequirements.rs

narrow: fix commits of empty files...

narrow: fix commits of empty files The problem is that when committing a new file with empty contents (or in general empty file with filelog p1 = -1), hg commit with narrow doesn't create a filelog revision at all, which causes failures in further commands. The problem seems to be that: - hg thinks that instead of creating a new filelog revision, it can use the filelog's p1 (the nullrev) - because it thinks the file contents is the same in that revision and in p1 - because `narrowfilelog.cmp(nullrev, b'')` is True (unlike with `filelog.cmp`) It's not clear to me which `cmp` behaves better. But I think it makes sense to change the commit code to not to "reuse" the null rev when adding an empty file with filelog p1 == filelog p2 == -1. This is consistent with never writing the null rev in the manifest, which `hg verify` claims is an invariant: ``` inside/c@4: manifest refers to unknown revision ``` Differential Revision: https://phab.mercurial-scm.org/D11400

Simon Sapin - - Load All Authors

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             debugrequirements.rs
        
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             | 625 B
            
                | application/rls-services+xml
            
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             / rust / rhg / src / commands / debugrequirements.rs
          
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      use crate::error::CommandError;

      pub const HELP_TEXT: &str = "

      Print the current repo requirements.

      ";

      pub fn args() -> clap::App<'static, 'static> {

          clap::SubCommand::with_name("debugrequirements").about(HELP_TEXT)

      }

      pub fn run(invocation: &crate::CliInvocation) -> Result<(), CommandError> {

          let repo = invocation.repo?;

          let mut output = String::new();

          let mut requirements: Vec<_> = repo.requirements().iter().collect();

          requirements.sort();

          for req in requirements {

              output.push_str(req);

              output.push('\n');

          }

          invocation.ui.write_stdout(output.as_bytes())?;

          Ok(())

      }

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				use crate::error::CommandError;

				pub const HELP_TEXT: &str = "
				Print the current repo requirements.
				";

				pub fn args() -> clap::App<'static, 'static> {
				clap::SubCommand::with_name("debugrequirements").about(HELP_TEXT)
				}

				pub fn run(invocation: &crate::CliInvocation) -> Result<(), CommandError> {
				let repo = invocation.repo?;
				let mut output = String::new();
				let mut requirements: Vec<_> = repo.requirements().iter().collect();
				requirements.sort();
				for req in requirements {
				output.push_str(req);
				output.push('\n');
				}
				invocation.ui.write_stdout(output.as_bytes())?;
				Ok(())
				}