[PATCH] bookmark: don't allow integers as bookmark/branch/tag names

[Durham Goode]

# HG changeset patch
# User Durham Goode <durham at fb.com>
# Date 1360110173 28800
# Node ID 3e4293758d473380c2877d07ead9eaeccff34b65
# Parent  c6377e34cb1ed79cb142f01652b0acfa09ef8c1f
bookmark: don't allow integers as bookmark/branch/tag names

Bookmarks/branches/tags shouldn't be allowed to be integers because that
overlaps with revision numbers.  Right now if a user created one they can't
use it anyway because the revision numbers take precedence.

The check only happens when creating a new bookmark/etc from a command so it
shouldn't affect existing bookmarks/branches/tags or importing branches from
git.

This fix was prompted by us having a user create a bookmark named "404" then
accidentally checkout a very old version of our repository.

diff --git a/mercurial/scmutil.py b/mercurial/scmutil.py
--- a/mercurial/scmutil.py
+++ b/mercurial/scmutil.py
@@ -34,6 +34,11 @@
     for c in (':', '\0', '\n', '\r'):
         if c in lbl:
             raise util.Abort(_("%r cannot be used in a name") % c)
+    try:
+        int(lbl)
+        raise util.Abort(_("a %s cannot have an integer as its name") % kind)
+    except ValueError:
+        pass
 
 def checkfilename(f):
     '''Check that the filename f is an acceptable filename for a tracked file'''
diff --git a/tests/test-bookmarks.t b/tests/test-bookmarks.t
--- a/tests/test-bookmarks.t
+++ b/tests/test-bookmarks.t
@@ -257,6 +257,12 @@
   abort: a bookmark cannot have the name of an existing branch
   [255]
 
+bookmark with integer name
+
+  $ hg bookmark 10
+  abort: a bookmark cannot have an integer as its name
+  [255]
+
 incompatible options
 
   $ hg bookmark -m Y -d Z
diff --git a/tests/test-rebase-collapse.t b/tests/test-rebase-collapse.t
--- a/tests/test-rebase-collapse.t
+++ b/tests/test-rebase-collapse.t
@@ -496,15 +496,15 @@
   $ hg ci -Am 'A'
   adding a
 
-  $ hg branch '1'
-  marked working directory as branch 1
+  $ hg branch 'one'
+  marked working directory as branch one
   (branches are permanent and global, did you want a bookmark?)
   $ echo 'b' > b
   $ hg ci -Am 'B'
   adding b
 
-  $ hg branch '2'
-  marked working directory as branch 2
+  $ hg branch 'two'
+  marked working directory as branch two
   (branches are permanent and global, did you want a bookmark?)
   $ echo 'c' > c
   $ hg ci -Am 'C'
@@ -518,9 +518,9 @@
   $ hg tglog
   @  3: 'D'
   |
-  | o  2: 'C' 2
+  | o  2: 'C' two
   | |
-  | o  1: 'B' 1
+  | o  1: 'B' one
   |/
   o  0: 'A'
   
@@ -546,9 +546,9 @@
   |/
   o  3: 'D'
   |
-  | o  2: 'C' 2
+  | o  2: 'C' two
   | |
-  | o  1: 'B' 1
+  | o  1: 'B' one
   |/
   o  0: 'A'
   
@@ -559,9 +559,9 @@
   |
   o  3: 'D'
   |
-  | o  2: 'C' 2
+  | o  2: 'C' two
   | |
-  | o  1: 'B' 1
+  | o  1: 'B' one
   |/
   o  0: 'A'