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watch: inform about optional argument for -d switch

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The -d, --differences switch(s) can use optional argument that was
not documented earlier.

Reported-By: Marian Sigler <m@qjym.de>
Bug-Debian: http://bugs.debian.org/597021
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
This commit is contained in:
Sami Kerola
2012-02-11 21:00:05 +01:00
parent 1af18c260a
commit 529fa2e615
2 changed files with 6 additions and 3 deletions
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3
watch.c
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@ -67,7 +67,8 @@ static void __attribute__ ((__noreturn__))
fputs(USAGE_OPTIONS, out);
fputs(_(" -b, --beep beep if command has a non-zero exit\n"
" -c, --color interpret ANSI color sequences\n"
" -d, --differences highlight changes between updates\n"
" -d, --differences[=<permanent>]\n"
" highlight changes between updates\n"
" -e, --errexit exit if command has a non-zero exit\n"
" -n, --interval <secs> seconds to wait between updates\n"
" -p, --precise attempt run command in precise intervals\n"