Patchutils is a small collection of programs that operate on patch files.
This version contains:
+ combinediff: creates a cumulative patch from two incremental patches;
+ dehtmldiff: gets usable diff from an HTML page;
+ filterdiff: extracts or excludes diffs from a diff file;
+ fixcvsdiff: fixes problematic cvs diff files;
+ flipdiff: exchanges the order of two incremental patches;
+ grepdiff: shows files modified by a diff containing a regex;
+ espdiff: applies the appropriate transformation to a set of patches;
+ interdiff: shows differences between two unified diff files;
+ lsdiff: shows which files are modified by a patch;
+ recountdiff: recomputes patch counts and offsets;
+ rediff: fixes offsets and counts of a hand-edited diff;
+ splitdiff: separates out incremental patches;
+ unwrapdiff: demangles word-wrapped patches.

• Dmitry V. Levin
• Ilya Evseev
• Stanislav Ievlev

• patchutils
• patchutils-debuginfo