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look: implement long options

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gentoo has "util-linux 2.24.1" with long options.  Other distributions
	have similar.

	usage() is intentionally unchanged to keep it short and sweet

Reviewed by:	jmg
Discussed with:	adrian, jilles
This commit is contained in:
Eitan Adler 2014-07-04 04:47:29 +00:00
parent 43630e625a
commit b5bb953863
2 changed files with 16 additions and 5 deletions
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10
usr.bin/look/look.1
View File

@ -63,12 +63,12 @@ alphabetic characters is ignored.
.Pp
The following options are available:
.Bl -tag -width indent
.It Fl d
.It Fl d , -alphanum
Dictionary character set and order, i.e., only alphanumeric characters
are compared.
.It Fl f
.It Fl f , -ignore-case
Ignore the case of alphabetic characters.
.It Fl t
.It Fl t , -terminate Ar termchar
Specify a string termination character, i.e., only the characters
in
.Ar string
@ -106,7 +106,9 @@ implementation.
.Pp
The
.Fl a
flag is ignored for compability.
and
.Fl -alternative
flags are ignored for compability.
.Sh SEE ALSO
.Xr grep 1 ,
.Xr sort 1

11
usr.bin/look/look.c
View File

@ -59,6 +59,7 @@ __FBSDID("$FreeBSD$");
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <getopt.h>
#include <limits.h>
#include <locale.h>
#include <stdint.h>
@ -88,6 +89,14 @@ static void print_from(wchar_t *, unsigned char *, unsigned char *);
static void usage(void);
static struct option longopts[] = {
{ "alternative",no_argument, NULL, 'a' },
{ "alphanum", no_argument, NULL, 'd' },
{ "ignore-case",no_argument, NULL, 'i' },
{ "terminate", required_argument, NULL, 't'},
{ NULL, 0, NULL, 0 },
};
int
main(int argc, char *argv[])
{
@ -102,7 +111,7 @@ main(int argc, char *argv[])
file = _path_words;
termchar = L'\0';
while ((ch = getopt(argc, argv, "adft:")) != -1)
while ((ch = getopt_long(argc, argv, "+adft:", longopts, NULL)) != -1)
switch(ch) {
case 'a':
/* COMPATIBILITY */