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quote empty strings for re-entry into shell 

From: Martijn Dekker <martijn@inlv.org>
This commit is contained in:
tg 2018-03-17 22:46:09 +00:00
parent 4abbaa0400
commit 0096aeeed4
1 changed files with 9 additions and 2 deletions
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11
misc.c
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@ -32,7 +32,7 @@
#include <grp.h>
#endif
__RCSID("$MirOS: src/bin/mksh/misc.c,v 1.291 2018/01/14 00:03:03 tg Exp $");
__RCSID("$MirOS: src/bin/mksh/misc.c,v 1.292 2018/03/17 22:46:09 tg Exp $");
#define KSH_CHVT_FLAG
#ifdef MKSH_SMALL
@ -1346,7 +1346,14 @@ print_value_quoted(struct shf *shf, const char *s)
const unsigned char *p = (const unsigned char *)s;
bool inquote = true;
/* first, check whether any quotes are needed */
/* first, special-case empty strings (for re-entrancy) */
if (!*s) {
shf_putc('\'', shf);
shf_putc('\'', shf);
return;
}
/* non-empty; check whether any quotes are needed */
while (rtt2asc(c = *p++) >= 32)
if (ctype(c, C_QUOTE | C_SPC))
inquote = false;