D6369: templatekw: make {file_*} compare to both merge parents (issue4292)

[martinvonz (Martin von Zweigbergk)]

martinvonz updated this revision to Diff 15266.

REPOSITORY
  rHG Mercurial

CHANGES SINCE LAST UPDATE
  https://phab.mercurial-scm.org/D6369?vs=15153&id=15266

REVISION DETAIL
  https://phab.mercurial-scm.org/D6369

AFFECTED FILES
  mercurial/templatekw.py
  relnotes/next
  tests/test-template-keywords.t

CHANGE DETAILS

diff --git a/tests/test-template-keywords.t b/tests/test-template-keywords.t
--- a/tests/test-template-keywords.t
+++ b/tests/test-template-keywords.t
@@ -809,9 +809,9 @@
   $ hg log -l1 -T '{files}\n'
   a fourth
   $ hg log -l1 -T '{file_mods}\n'
-  third
+  
   $ hg log -l1 -T '{file_adds}\n'
-  b fifth
+  
   $ hg log -l1 -T '{file_dels}\n'
   a fourth
 
diff --git a/relnotes/next b/relnotes/next
--- a/relnotes/next
+++ b/relnotes/next
@@ -15,6 +15,10 @@
 
 == Bug Fixes  ==
 
+ * issue4292: "hg log and {files} {file_adds} {file_mods} {file_dels}
+   in template show wrong files on merged revision". See details in
+   "Backwards Compatibility Changes".
+
 
 == Backwards Compatibility Changes ==
 
@@ -31,6 +35,16 @@
    previously replace files *in* the configured directory by
    subdirectories.
 
+* Template keyword `{file_mods}`, `{file_adds}`, and `{file_dels}`
+   have changed behavior on merge commits. They used to be relative to
+   the first parent, but they now consider both parents. `{file_adds}`
+   shows files that exists in the commit but did not exist in either
+   parent. `{file_dels}` shows files that do not exist in the commit
+   but existed in either parent. `{file_mods}` show the remaining
+   files from `{files}` that were not in the other two
+   sets.
+
+
 == Internal API Changes ==
 
  * Matchers are no longer iterable. Use `match.files()` instead.
diff --git a/mercurial/templatekw.py b/mercurial/templatekw.py
--- a/mercurial/templatekw.py
+++ b/mercurial/templatekw.py
@@ -290,11 +290,6 @@
             statmap.update((f, char) for f in files)
     return revcache['filestatusmap']  # {path: statchar}
 
-def _showfilesbystat(context, mapping, name, index):
-    stat = _getfilestatus(context, mapping)
-    files = stat[index]
-    return templateutil.compatfileslist(context, mapping, name, files)
-
 @templatekeyword('file_copies',
                  requires={'repo', 'ctx', 'cache', 'revcache'})
 def showfilecopies(context, mapping):
@@ -332,17 +327,23 @@
 @templatekeyword('file_adds', requires={'ctx', 'revcache'})
 def showfileadds(context, mapping):
     """List of strings. Files added by this changeset."""
-    return _showfilesbystat(context, mapping, 'file_add', 1)
+    ctx = context.resource(mapping, 'ctx')
+    return templateutil.compatfileslist(context, mapping, 'file_add',
+                                        ctx.filesadded())
 
 @templatekeyword('file_dels', requires={'ctx', 'revcache'})
 def showfiledels(context, mapping):
     """List of strings. Files removed by this changeset."""
-    return _showfilesbystat(context, mapping, 'file_del', 2)
+    ctx = context.resource(mapping, 'ctx')
+    return templateutil.compatfileslist(context, mapping, 'file_del',
+                                        ctx.filesremoved())
 
 @templatekeyword('file_mods', requires={'ctx', 'revcache'})
 def showfilemods(context, mapping):
     """List of strings. Files modified by this changeset."""
-    return _showfilesbystat(context, mapping, 'file_mod', 0)
+    ctx = context.resource(mapping, 'ctx')
+    return templateutil.compatfileslist(context, mapping, 'file_mod',
+                                        ctx.filesmodified())
 
 @templatekeyword('files', requires={'ctx'})
 def showfiles(context, mapping):



To: martinvonz, #hg-reviewers
Cc: yuja, mercurial-devel