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Re: [PATCH 5/5] diff: parse U/u/unified options with an optional integer arg

From
Linus Torvalds <torvalds@osdl.org>
Date
May 14, 2006, 16:33 UTC
Message-ID
<Pine.LNX.4.64.0605140931410.3866@g5.osdl.org>
In-Reply-To
<11476199631085-git-send-email-normalperson@yhbt.net>
On Sun, 14 May 2006, Eric Wong wrote:
> 
> -u (lowercase) now accepts an optional arg, like -U (GNU diff
> -u also has this behavior).
Actually, modern GNU "diff -u5" will say
	diff: `-5' option is obsolete; use `-U 5'
	diff: Try `diff --help' for more information.
and exit.

I'm not entirely sure why, but I think it's because "u" can be mixed (ie with something like "-urN"), while "U" cannot. The GNU diff rule seems to be that simple arguments can be mixed together, but arguments with parameters cannot. Which sounds sane.

		Linus
Previous: Eric WongNext: Eric Wong
Message 11 of 12 in “gitopt - command-line parsing enhancements (take #2)”
  1. gitopt - command-line parsing enhancements (take #2)Eric Wong, May 14, 2006
  2. 1/5 gitopt: a new command-line option parser for gitEric Wong, May 14, 2006
  3. 2/5 gitopt: convert ls-files, ls-tree, update-indexEric Wong, May 14, 2006
  4. 3/5 gitopt: convert setup_revisions() and friendsEric Wong, May 14, 2006
  5. 4/5 commit: allow --pretty= args to be abbreviatedEric Wong, May 14, 2006
  6. Junio C HamanoMay 14, 2006
  7. commit: allow --pretty= args to be abbreviatedEric Wong, May 15, 2006
  8. Junio C HamanoMay 15, 2006
  9. Eric WongMay 16, 2006
  10. 5/5 diff: parse U/u/unified options with an optional integer argEric Wong, May 14, 2006
  11. Linus TorvaldsMay 14, 2006
  12. Eric WongMay 14, 2006

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