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unidiff - context/unified diff conversion utility (with new improvements)
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AceHusky12/unidiff
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These utilities are made for manipulating unified context diffs. The unified diff is a fairly recent critter that combines the old and new hunks of a context diff into one hunk. This is smaller than a normal context diff by about 20% (I've seen from 12% to 48%, depending on the number of redundant context lines that are no longer needed). Keep in mind that _no_information_is_lost_ by the conversion of a context diff into a unified diff. Only the redundant context lines that present the same information twice. If you're worried that some people will be unable to apply a patch released as a unified diff then you could distribute the "unipatch.c" program -- 1.5k of C source that converts a unified diff into a context diff that any version of patch can understand. The main utility is in unify.c, which is capable of transforming a context diff into a unified diff and back again. It is also able to do useful filtering of the patch as it is converted. For example, I use unify with the -U option to transform raw diff output into a releasable patch. See the man page for details. If you find that you like unified diffs, you may like to know that gnu diff version 1.15 creates them directly with the -u (+unified) option, and patch version 12u4 can apply them. You can grab both of these from any gnu archive site. Version 1.1 of the utilities properly handles the abbreviated header line introduced in gnu diff 1.15. It also adds the -= and -o options to unify. \ /| / /|\/ /| /(_) Wayne Davison (_)/ |/ /\|/ / |/ \ davison@borland.com (W A Y N e)
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unidiff - context/unified diff conversion utility (with new improvements)
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