# HG changeset patch
# User Yuya Nishihara <yuya@tcha.org>
# Date 2018-07-11 12:35:31
# Node ID eba69ddd4e52f9ab12f1ea01177891d3169aa298
# Parent  0d0f8bd692c46aa4d1939500f9ec6d6ff886ec1a

grep: search working directory files by default if --all-files is specified

The default was -rtip:0 before, but "--all-files -rtip:0" would be the most
useless combination, and it isn't supported yet. Let's change the default to
something useful.

This isn't flagged as BC since --all-files isn't released.

Differential Revision: https://phab.mercurial-scm.org/D3917

diff --git a/mercurial/commands.py b/mercurial/commands.py
--- a/mercurial/commands.py
+++ b/mercurial/commands.py
@@ -2535,6 +2535,8 @@ def grep(ui, repo, pattern, *pats, **opt
     diff = opts.get('all') or opts.get('diff')
     if diff and opts.get('all_files'):
         raise error.Abort(_('--diff and --all-files are mutually exclusive'))
+    if opts.get('all_files') and not opts.get('rev'):
+        opts['rev'] = ['wdir()']
 
     reflags = re.M
     if opts.get('ignore_case'):
diff --git a/tests/test-grep.t b/tests/test-grep.t
--- a/tests/test-grep.t
+++ b/tests/test-grep.t
@@ -412,6 +412,18 @@ Test for showing working of allfiles fla
   $ hg grep -r "." "unmod" --all-files
   um:1:unmod
 
+With --all-files, the working directory is searched by default
+
+  $ echo modified >> new
+  $ hg grep --all-files mod
+  new:2147483647:modified
+  um:2147483647:unmod
+
+ which can be overridden by -rREV
+
+  $ hg grep --all-files -r. mod
+  um:1:unmod
+
 --diff --all-files makes no sense since --diff is the option to grep history
 
   $ hg grep --diff --all-files um