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rc: usage: do not output non-printable short options in usage

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Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Mike Frysinger 2011-11-19 02:43:25 -05:00
parent c21c1f1e59
commit 453d13296d
1 changed files with 5 additions and 2 deletions
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7
src/rc/_usage.c
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@ -24,6 +24,7 @@
*/
#include "version.h"
#include <ctype.h>
#if lint
# define _noreturn
@ -59,6 +60,7 @@ usage(int exit_status)
char *lo;
char *p;
char *token;
char val[4] = "-?,";
#ifdef usagestring
printf(usagestring);
@ -70,8 +72,9 @@ usage(int exit_status)
#endif
printf("\n\nOptions: [" getoptstring "]\n");
for (i = 0; longopts[i].name; ++i) {
len = printf(" -%c, --%s %s", longopts[i].val, longopts[i].name,
has_arg[longopts[i].has_arg]);
val[1] = longopts[i].val;
len = printf(" %3s --%s %s", isprint(longopts[i].val) ? val : "",
longopts[i].name, has_arg[longopts[i].has_arg]);
lo = p = xstrdup(longopts_help[i]);
while ((token = strsep(&p, "\n"))) {