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CVS commit: othersrc/external/bsd/netdiff

Module Name:    othersrc
Committed By:   agc
Date:           Sun Jan 13 22:17:22 UTC 2013

Modified Files:
        othersrc/external/bsd/netdiff/bin: Makefile
        othersrc/external/bsd/netdiff/bin/netdiff: Makefile
        othersrc/external/bsd/netdiff/bin/qdiff: Makefile
        othersrc/external/bsd/netdiff/dist: diff.c diff_subr.c diffreg.c
            libnetdiff.3 netdiff.h
        othersrc/external/bsd/netdiff/lib: Makefile
Added Files:
        othersrc/external/bsd/netdiff/bin/wdiff: Makefile f1 f2
        othersrc/external/bsd/netdiff/dist: netwdiff.1 netwdiff.c

Log Message:
Add wdiff functionality, which performs a word-by-word comparison
between two areas of memory, or between two files.  This is
accomplished using two new functions, wdiff_mem() or wdiff_file(), and
results can either be retrieved by displaying them to stdout, to an
output file, or by using diff_get_diffs() to retrieve the results

Internally, the two files/areas of memory are split into separate
areas of memory with a word on each line, and the two areas of memory
are compared using diff_mem().

Comparisons can also be made in a case-insensitive manner.

In the comparison output, added text is displayed in {+ ...  +}
delimiters, and deleted text is shown with [- ... -] delimiters.
Changes are displayed as a deletion and an addition.

+ Deleted text can be inhibited from display by using the -1 argument
  to netwdiff(1).
+ Added text can be inhibited from display by using the -2 argument to
+ Common text can be inhibited from display by using the -3 argument
  to netwdiff(1).

(Don't blame me, these flags are the ones used by GNU wdiff.)

With thanks to Thomas Klausner for the nudge to create this.

To generate a diff of this commit:
cvs rdiff -u -r1.2 -r1.3 othersrc/external/bsd/netdiff/bin/Makefile
cvs rdiff -u -r1.1.1.1 -r1.2 \
cvs rdiff -u -r1.1.1.1 -r1.2 othersrc/external/bsd/netdiff/bin/qdiff/Makefile
cvs rdiff -u -r0 -r1.1 othersrc/external/bsd/netdiff/bin/wdiff/Makefile \
    othersrc/external/bsd/netdiff/bin/wdiff/f1 \
cvs rdiff -u -r1.3 -r1.4 othersrc/external/bsd/netdiff/dist/diff.c \
    othersrc/external/bsd/netdiff/dist/diffreg.c \
cvs rdiff -u -r1.4 -r1.5 othersrc/external/bsd/netdiff/dist/diff_subr.c
cvs rdiff -u -r1.2 -r1.3 othersrc/external/bsd/netdiff/dist/netdiff.h
cvs rdiff -u -r0 -r1.1 othersrc/external/bsd/netdiff/dist/netwdiff.1 \
cvs rdiff -u -r1.1.1.1 -r1.2 othersrc/external/bsd/netdiff/lib/Makefile

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

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