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grep: Fix an incorrect description of the -C flag

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It seems that the number of lines is no longer an optional parameter to
the -C flag. Document it accordingly both in the manual page and the
usage message.

Reviewed by:	yuripv
Approved by:	yuripv
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D28509
This commit is contained in:
Mateusz Piotrowski 2021-02-05 19:38:09 +01:00
parent c0e41dff70
commit be6b8b7a3a
2 changed files with 11 additions and 14 deletions
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21
usr.bin/grep/grep.1
View File

@ -30,7 +30,7 @@
.\"
.\" @(#)grep.1 8.3 (Berkeley) 4/18/94
.\"
.Dd February 4, 2021
.Dd April 17, 2021
.Dt GREP 1
.Os
.Sh NAME
@ -45,13 +45,13 @@
.Op Fl abcdDEFGHhIiLlmnOopqRSsUVvwxz
.Op Fl A Ar num
.Op Fl B Ar num
.Op Fl C Ns Op Ar num
.Op Fl C Ar num
.Op Fl e Ar pattern
.Op Fl f Ar file
.Op Fl Fl binary-files= Ns Ar value
.Op Fl Fl color Ns Op Cm = Ns Ar when
.Op Fl Fl colour Ns Op Cm = Ns Ar when
.Op Fl Fl context Ns Op Cm = Ns Ar num
.Op Fl Fl context= Ns Ar num
.Op Fl Fl label
.Op Fl Fl line-buffered
.Op Fl Fl null
@ -123,18 +123,15 @@ options.
.It Fl b , Fl Fl byte-offset
The offset in bytes of a matched pattern is
displayed in front of the respective matched line.
.It Fl C Ns Oo Ar num Oc , Fl Fl context Ns Oo = Ns Ar num Oc
.It Fl C Ar num , Fl Fl context= Ns Ar num
Print
.Ar num
lines of leading and trailing context surrounding each match.
The default value of
.Ar num
is
.Dq 2
and is equivalent to
.Dq Fl A Ar 2 Fl B Ar 2 .
Note:
no whitespace may be given between the option and its argument.
See also the
.Fl A
and
.Fl B
options.
.It Fl c , Fl Fl count
Only a count of selected lines is written to standard output.
.It Fl Fl colour= Ns Oo Ar when Oc , Fl Fl color= Ns Oo Ar when Oc

4
usr.bin/grep/grep.c
View File

@ -57,9 +57,9 @@ const char *errstr[] = {
"",
/* 1*/ "(standard input)",
/* 2*/ "unknown %s option",
/* 3*/ "usage: %s [-abcDEFGHhIiLlmnOoPqRSsUVvwxz] [-A num] [-B num] [-C[num]]\n",
/* 3*/ "usage: %s [-abcDEFGHhIiLlmnOoPqRSsUVvwxz] [-A num] [-B num] [-C num]\n",
/* 4*/ "\t[-e pattern] [-f file] [--binary-files=value] [--color=when]\n",
/* 5*/ "\t[--context[=num]] [--directories=action] [--label] [--line-buffered]\n",
/* 5*/ "\t[--context=num] [--directories=action] [--label] [--line-buffered]\n",
/* 6*/ "\t[--null] [pattern] [file ...]\n",
/* 7*/ "Binary file %s matches\n",
/* 8*/ "%s (BSD grep, GNU compatible) %s\n",