[PATCH 3 of 8] addremove: warn when addremove fails to operate on a named path

[Matt Harbison]

# HG changeset patch
# User Matt Harbison <matt_harbison at yahoo.com>
# Date 1417030056 18000
#      Wed Nov 26 14:27:36 2014 -0500
# Node ID 0cdf9472ba6aab34b5e95babc8283e3388dbb668
# Parent  0a826a7d6222c6170d7c1c9c8cbe3a735d4ad3b7
addremove: warn when addremove fails to operate on a named path

It looks like a bad path is the only mode of failure for addremove.  This
warning is probably useful for the standalone command, but more important for
'commit -A'.  That command doesn't currently abort if the addremove fails, but
it will be made to do so prior to adding subrepo support, since not all subrepos
will support addremove.  We could just abort here, but it looks like addremove
has always silently ignored bad paths, except for the exit code.

diff --git a/mercurial/scmutil.py b/mercurial/scmutil.py
--- a/mercurial/scmutil.py
+++ b/mercurial/scmutil.py
@@ -720,9 +720,15 @@
         similarity = float(opts.get('similarity') or 0)
 
     rejected = []
-    m.bad = lambda x, y: rejected.append(x)
+    origbad = m.bad
+    def badfn(f, msg):
+        if f in m.files():
+            origbad(f, msg)
+        rejected.append(f)
 
+    m.bad = badfn
     added, unknown, deleted, removed, forgotten = _interestingfiles(repo, m)
+    m.bad = origbad
 
     unknownset = set(unknown + forgotten)
     toprint = unknownset.copy()
diff --git a/tests/test-addremove.t b/tests/test-addremove.t
--- a/tests/test-addremove.t
+++ b/tests/test-addremove.t
@@ -22,6 +22,16 @@
   $ hg forget foo
   $ hg -v addremove
   adding foo
+  $ hg forget foo
+#if windows
+  $ hg -v addremove nonexistant
+  nonexistant: The system cannot find the file specified
+  [1]
+#else
+  $ hg -v addremove nonexistant
+  nonexistant: No such file or directory
+  [1]
+#endif
   $ cd ..
 
   $ hg init sim