[PATCH] dispatch: strip command line options like config file options

[Tony Tung]

# HG changeset patch
# User Tony Tung <ttung at fb.com>
# Date 1454974530 28800
#      Mon Feb 08 15:35:30 2016 -0800
# Node ID 97240c9addb84f73752dad57e6531dfea30f3f0d
# Parent  01a5143cd25f285f8c745a92986cd7186bb32c90
dispatch: strip command line options like config file options.

Currently, whitespace in command line --config options are considered
significant while whitespace in config files are not considered
significant.  This diff strips the leading and trailing whitespace from
command line config options.

diff --git a/mercurial/dispatch.py b/mercurial/dispatch.py
--- a/mercurial/dispatch.py
+++ b/mercurial/dispatch.py
@@ -609,7 +609,8 @@
 
     for cfg in config:
         try:
-            name, value = cfg.split('=', 1)
+            name, value = [cfgelem.strip()
+                           for cfgelem in cfg.split('=', 1)]
             section, name = name.split('.', 1)
             if not section or not name:
                 raise IndexError
diff --git a/tests/test-ui-config.py.out b/tests/test-ui-config.py.out
--- a/tests/test-ui-config.py.out
+++ b/tests/test-ui-config.py.out
@@ -1,5 +1,5 @@
 [('string', 'string value'), ('bool1', 'true'), ('bool2', 'false'), ('boolinvalid', 'foo'), ('int1', '42'), ('int2', '-42'), ('intinvalid', 'foo')]
-[('list1', 'foo'), ('list2', 'foo bar baz'), ('list3', 'alice, bob'), ('list4', 'foo bar baz alice, bob'), ('list5', 'abc d"ef"g "hij def"'), ('list6', '"hello world", "how are you?"'), ('list7', 'Do"Not"Separate'), ('list8', '"Do"Separate'), ('list9', '"Do\\"NotSeparate"'), ('list10', 'string "with extraneous" quotation mark"'), ('list11', 'x, y'), ('list12', '"x", "y"'), ('list13', '""" key = "x", "y" """'), ('list14', ',,,,     '), ('list15', '" just with starting quotation'), ('list16', '"longer quotation" with "no ending quotation'), ('list17', 'this is \\" "not a quotation mark"'), ('list18', '\n \n\nding\ndong')]
+[('list1', 'foo'), ('list2', 'foo bar baz'), ('list3', 'alice, bob'), ('list4', 'foo bar baz alice, bob'), ('list5', 'abc d"ef"g "hij def"'), ('list6', '"hello world", "how are you?"'), ('list7', 'Do"Not"Separate'), ('list8', '"Do"Separate'), ('list9', '"Do\\"NotSeparate"'), ('list10', 'string "with extraneous" quotation mark"'), ('list11', 'x, y'), ('list12', '"x", "y"'), ('list13', '""" key = "x", "y" """'), ('list14', ',,,,'), ('list15', '" just with starting quotation'), ('list16', '"longer quotation" with "no ending quotation'), ('list17', 'this is \\" "not a quotation mark"'), ('list18', 'ding\ndong')]
 ---
 'string value'
 'true'