ash: allow newline after variable name in for loop

Newline is a valid delimiter between the variable name and `in`
keyword in for loops.

Based on commit 22e8fb4 from git://git.kernel.org/pub/scm/utils/dash/dash.git
by Herbert Xu.

function                                             old     new   delta
parse_command                                       1568    1563      -5
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-5)               Total: -5 bytes

Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

3 files changed, 8 insertions, 2 deletions

diff --git a/shell/ash.c b/shell/ash.c
index 17121aa9b..3339666b9 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -10913,7 +10913,7 @@ parse_command(void)
                 n1 = stzalloc(sizeof(struct nfor));
                 n1->type = NFOR;
                 n1->nfor.var = wordtext;
-                checkkwd = CHKKWD | CHKALIAS;
+                checkkwd = CHKNL | CHKKWD | CHKALIAS;
                 if (readtoken() == TIN) {
                         app = ≈
                         while (readtoken() == TWORD) {
@@ -10940,7 +10940,7 @@ parse_command(void)
                          * Newline or semicolon here is optional (but note
                          * that the original Bourne shell only allowed NL).
                          */
-                        if (lasttoken != TNL && lasttoken != TSEMI)
+                        if (lasttoken != TSEMI)
                                 tokpushback = 1;
                 }
                 checkkwd = CHKNL | CHKKWD | CHKALIAS;
diff --git a/shell/ash_test/ash-misc/for.right b/shell/ash_test/ash-misc/for.right
new file mode 100644
index 000000000..d86bac9de
--- /dev/null
+++ b/shell/ash_test/ash-misc/for.right
@@ -0,0 +1 @@
+OK
diff --git a/shell/ash_test/ash-misc/for.tests b/shell/ash_test/ash-misc/for.tests
new file mode 100755
index 000000000..4889a9f2d
--- /dev/null
+++ b/shell/ash_test/ash-misc/for.tests
@@ -0,0 +1,5 @@
+for i
+in OK
+do
+        echo $i
+done