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ash: add/improve comments, no code changes

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This commit is contained in:
Denis Vlasenko 2009-03-31 19:36:58 +00:00
parent 46aeab9a34
commit f6fbd62760
1 changed files with 5 additions and 3 deletions
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8
shell/ash.c
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@ -12618,14 +12618,16 @@ readcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
} }
if (c == '\n') if (c == '\n')
break; break;
/* $IFS splitting */
/* http://www.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_06_05 */
is_ifs = strchr(ifs, c); is_ifs = strchr(ifs, c);
if (startword && is_ifs) { if (startword && is_ifs) {
if (isspace(c)) if (isspace(c))
continue; continue;
/* non-space ifs char */ /* it is a non-space ifs char */
startword--; startword--;
if (startword == 1) /* first one? */ if (startword == 1) /* first one? */
continue; continue; /* yes, it is not next word yet */
} }
startword = 0; startword = 0;
if (ap[1] != NULL && is_ifs) { if (ap[1] != NULL && is_ifs) {
@ -12634,7 +12636,7 @@ readcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
beg = stackblock(); beg = stackblock();
setvar(*ap, beg, 0); setvar(*ap, beg, 0);
ap++; ap++;
/* can we skip one non-space ifs? (2: yes) */ /* can we skip one non-space ifs char? (2: yes) */
startword = isspace(c) ? 2 : 1; startword = isspace(c) ? 2 : 1;
STARTSTACKSTR(p); STARTSTACKSTR(p);
continue; continue;