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[PATCH] _diff_options doesn't support -w/--ignore-all-space for GNU diff



I'm using GNU diff 3.7 and zsh 5.7.1 as provided by Debian 10.2, and I noticed that zsh's completion doesn't support diffs -w/--ignore-all-space parameter. This is pretty annoying, because it means that it won't complete "new file" in this case:

diff -uw old new<TAB>

It'll think that -uw is "old file", and that "old" is "new file". I don't fully understand the _diff_options completion script, so my change might probably not be completely correct, but the attached patch fixes it for me.

Martin
--- _diff_options	2019-02-05 01:18:01.000000000 +0100
+++ /usr/share/zsh/functions/Completion/Unix/_diff_options	2020-02-06 16:57:25.785300505 +0100
@@ -82,6 +82,7 @@
       '--palette=[specify colors to use]:color:_diff_palette'
       "($of $ouc)--side-by-side[output in two columns]"
       "($of $ouc)-y[output in two columns]"
+      '(-w --ignore-all-space)'{-w,--ignore-all-space}'[ignore all white space]'
     )
   else
     args+=( '!--speed-large-files' )


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