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doc: clarify how -S works

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The existing text was very vague about what exactly it means
for difference to "contain" a change. This seems to cause
confusion on the mailing list every month or two.

To fix it we:

  1. use "introduce or remove an instance of" instead of
     "contain"

  2. point the user to gitdiffcore(7), which contains a more
     complete explanation

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King 2009-03-03 10:40:41 -05:00 committed by Junio C Hamano
parent 6f55ee4317
commit 821d56aa68
1 changed files with 4 additions and 1 deletions
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5
Documentation/diff-options.txt
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@ -176,7 +176,10 @@ override configuration settings.
number.
-S<string>::
Look for differences that contain the change in <string>.
Look for differences that introduce or remove an instance of
<string>. Note that this is different than the string simply
appearing in diff output; see the 'pickaxe' entry in
linkgit:gitdiffcore[7] for more details.
--pickaxe-all::
When -S finds a change, show all the changes in that