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(diff.info)sdiff Option Summary

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Specifying `diff' Options to `sdiff'
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   The following `sdiff' options have the same meaning as for `diff'.
Note: diff Options, for the use of these options.

     -a -b -d -i -t -v
     -B -H -I REGEXP
     
     --ignore-blank-lines  --ignore-case
     --ignore-matching-lines=REGEXP  --ignore-space-change
     --left-column  --minimal  --speed-large-files
     --suppress-common-lines  --expand-tabs
     --text  --version  --width=COLUMNS

   For historical reasons, `sdiff' has alternate names for some
options.  The `-l' option is equivalent to the `--left-column' option,
and similarly `-s' is equivalent to `--suppress-common-lines'.  The
meaning of the `sdiff' `-w' and `-W' options is interchanged from that
of `diff': with `sdiff', `-w COLUMNS' is equivalent to
`--width=COLUMNS', and `-W' is equivalent to `--ignore-all-space'.
`sdiff' without the `-o' option is equivalent to `diff' with the `-y'
or `--side-by-side' option (Note: Side by Side).