# HG changeset patch
# User Boris Feld <boris.feld@octobus.net>
# Date 1518448171 -3600
# Node ID 4f3e989536c39eb3167a6ac6252acdd6b006f7ef
# Parent  e84438846c2729175b361cbeeccd4da3a0174a2c
label: enforce the lack of leading or trailing white space

In practice, all commands create label are currently striping external white
space. Let us enforce this logic at a lower level before starting to rely on
it elsewhere.

diff -r e84438846c27 -r 4f3e989536c3 mercurial/scmutil.py
--- a/mercurial/scmutil.py	Tue Feb 13 00:05:45 2018 +0100
+++ b/mercurial/scmutil.py	Mon Feb 12 16:09:31 2018 +0100
@@ -267,6 +267,8 @@
         raise error.Abort(_("cannot use an integer as a name"))
     except ValueError:
         pass
+    if lbl.strip() != lbl:
+        raise error.Abort(_("leading or trailing whitespace in name %r") % lbl)
 
 def checkfilename(f):
     '''Check that the filename f is an acceptable filename for a tracked file'''