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由 Thomas Rast 提交于
When using word diff, the code sets the word_regex from various defaults if it was not set already. The problem is that it does this on the original diff_options, which will also be used in subsequent diffs. This means that when the word_regex is not given on the command line, only the first diff for which a setting for word_regex (either from attributes or diff.wordRegex) ever takes effect. This value then propagates to the rest of the diff runs and in particular prevents further attribute lookups. Fix the problem of changing diff state once and for all, by working with a _copy_ of the diff_options. Noticed-by: NJohannes Sixt <j6t@kdbg.org> Signed-off-by: NThomas Rast <trast@student.ethz.ch> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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