1Patchutils is a small collection of programs that operate on patch files.
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3- Interdiff generates an incremental patch from two patches against a common
4  source.
5- Combinediff generates a single patch from two incremental patches, allowing
6  you to merge patches together.
7- Filterdiff will select the portions of a patch file that apply to files
8  matching (or, alternatively, not matching) a shell wildcard.
9- Fixcvsdiff is for correcting the output of 'cvs diff'.
10- Rediff corrects hand-edited patches, by comparing the original patch with the
11  modified one and adjusting the offsets and counts.
12- Lsdiff displays a short listing of affected files in a patch file, along with
13  (optionally) the line numbers of the start of each patch.
14- Splitdiff separates out patches from a patch file so that each new patch file
15  only alters any given file once.
16- Grepdiff displays a list of the files modified by a patch where the patch
17  contains a given regular expression.
18- Recountdiff fixes up counts and offsets in a unified diff.
19- Unwrapdiff fixes word-wrapped unified diffs.
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