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  r80004 | r.david.murray | 2010-04-12 12:35:19 -0400 (Mon, 12 Apr 2010) | 13 lines

  Issue #7585: use tab between components in unified and context diff headers.

  Instead of spaces between the filename and date (or whatever the string
  is that follows the filename, if any) use tabs.  This is what the unix
  'diff' command does, for example, and difflib was intended to follow
  the 'standard' way of doing diffs.  This improves compatibility with
  patch tools.  The docs and examples are also changed to recommended that
  the date format used be the ISO 8601 format, which is what modern diff
  tools emit by default.

  Patch by Anatoly Techtonik.
........
This commit is contained in:
R. David Murray 2010-04-12 16:58:02 +00:00
parent af9c3cfd44
commit b2416e54b1
5 changed files with 51 additions and 21 deletions
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35
Lib/difflib.py
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@ -1160,18 +1160,18 @@ def unified_diff(a, b, fromfile='', tofile='', fromfiledate='',
The unidiff format normally has a header for filenames and modification
times. Any or all of these may be specified using strings for
'fromfile', 'tofile', 'fromfiledate', and 'tofiledate'. The modification
times are normally expressed in the format returned by time.ctime().
'fromfile', 'tofile', 'fromfiledate', and 'tofiledate'.
The modification times are normally expressed in the ISO 8601 format.
Example:
>>> for line in unified_diff('one two three four'.split(),
... 'zero one tree four'.split(), 'Original', 'Current',
... 'Sat Jan 26 23:30:50 1991', 'Fri Jun 06 10:20:52 2003',
... '2005-01-26 23:30:50', '2010-04-02 10:20:52',
... lineterm=''):
... print(line)
--- Original Sat Jan 26 23:30:50 1991
+++ Current Fri Jun 06 10:20:52 2003
... print(line) # doctest: +NORMALIZE_WHITESPACE
--- Original 2005-01-26 23:30:50
+++ Current 2010-04-02 10:20:52
@@ -1,4 +1,4 @@
+zero
one
@ -1184,8 +1184,10 @@ def unified_diff(a, b, fromfile='', tofile='', fromfiledate='',
started = False
for group in SequenceMatcher(None,a,b).get_grouped_opcodes(n):
if not started:
yield '--- %s %s%s' % (fromfile, fromfiledate, lineterm)
yield '+++ %s %s%s' % (tofile, tofiledate, lineterm)
fromdate = '\t%s' % fromfiledate if fromfiledate else ''
todate = '\t%s' % tofiledate if tofiledate else ''
yield '--- %s%s%s' % (fromfile, fromdate, lineterm)
yield '+++ %s%s%s' % (tofile, todate, lineterm)
started = True
i1, i2, j1, j2 = group[0][1], group[-1][2], group[0][3], group[-1][4]
yield "@@ -%d,%d +%d,%d @@%s" % (i1+1, i2-i1, j1+1, j2-j1, lineterm)
@ -1223,17 +1225,16 @@ def context_diff(a, b, fromfile='', tofile='',
The context diff format normally has a header for filenames and
modification times. Any or all of these may be specified using
strings for 'fromfile', 'tofile', 'fromfiledate', and 'tofiledate'.
The modification times are normally expressed in the format returned
by time.ctime(). If not specified, the strings default to blanks.
The modification times are normally expressed in the ISO 8601 format.
If not specified, the strings default to blanks.
Example:
>>> print(''.join(context_diff('one\ntwo\nthree\nfour\n'.splitlines(1),
... 'zero\none\ntree\nfour\n'.splitlines(1), 'Original', 'Current',
... 'Sat Jan 26 23:30:50 1991', 'Fri Jun 06 10:22:46 2003')),
... 'zero\none\ntree\nfour\n'.splitlines(1), 'Original', 'Current')),
... end="")
*** Original Sat Jan 26 23:30:50 1991
--- Current Fri Jun 06 10:22:46 2003
*** Original
--- Current
***************
*** 1,4 ****
one
@ -1251,8 +1252,10 @@ def context_diff(a, b, fromfile='', tofile='',
prefixmap = {'insert':'+ ', 'delete':'- ', 'replace':'! ', 'equal':' '}
for group in SequenceMatcher(None,a,b).get_grouped_opcodes(n):
if not started:
yield '*** %s %s%s' % (fromfile, fromfiledate, lineterm)
yield '--- %s %s%s' % (tofile, tofiledate, lineterm)
fromdate = '\t%s' % fromfiledate if fromfiledate else ''
todate = '\t%s' % tofiledate if tofiledate else ''
yield '*** %s%s%s' % (fromfile, fromdate, lineterm)
yield '--- %s%s%s' % (tofile, todate, lineterm)
started = True
yield '***************%s' % (lineterm,)