ash: add/improve comments, no code changes
diff --git a/shell/ash.c b/shell/ash.c
index 1de989e..b63a243 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -12618,14 +12618,16 @@
}
if (c == '\n')
break;
+ /* $IFS splitting */
+/* http://www.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_06_05 */
is_ifs = strchr(ifs, c);
if (startword && is_ifs) {
if (isspace(c))
continue;
- /* non-space ifs char */
+ /* it is a non-space ifs char */
startword--;
if (startword == 1) /* first one? */
- continue;
+ continue; /* yes, it is not next word yet */
}
startword = 0;
if (ap[1] != NULL && is_ifs) {
@@ -12634,7 +12636,7 @@
beg = stackblock();
setvar(*ap, beg, 0);
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;
STARTSTACKSTR(p);
continue;