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authorDenys Vlasenko <vda.linux@googlemail.com>2018-04-11 20:00:43 +0200
committerDenys Vlasenko <vda.linux@googlemail.com>2018-04-11 20:00:43 +0200
commitf693b606b732437bb1265c2ec883d93127f3f38e (patch)
tree921ed6a5ada75f8d608f139eecd211f0f5869eb9 /shell
parent44257ad5d0790a846423c9ef69a50049366b4578 (diff)
downloadbusybox-f693b606b732437bb1265c2ec883d93127f3f38e.tar.gz
hush: fix recent breakage from parse_stream() changes
function old new delta parse_stream 3808 3821 +13 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'shell')
-rw-r--r--shell/ash_test/ash-parsing/bkslash_newline3.right1
-rwxr-xr-xshell/ash_test/ash-parsing/bkslash_newline3.tests4
-rw-r--r--shell/hush.c44
-rw-r--r--shell/hush_test/hush-parsing/bkslash_newline3.right1
-rwxr-xr-xshell/hush_test/hush-parsing/bkslash_newline3.tests4
5 files changed, 32 insertions, 22 deletions
diff --git a/shell/ash_test/ash-parsing/bkslash_newline3.right b/shell/ash_test/ash-parsing/bkslash_newline3.right
new file mode 100644
index 000000000..e635074e5
--- /dev/null
+++ b/shell/ash_test/ash-parsing/bkslash_newline3.right
@@ -0,0 +1 @@
+a:[a]
diff --git a/shell/ash_test/ash-parsing/bkslash_newline3.tests b/shell/ash_test/ash-parsing/bkslash_newline3.tests
new file mode 100755
index 000000000..2accd4395
--- /dev/null
+++ b/shell/ash_test/ash-parsing/bkslash_newline3.tests
@@ -0,0 +1,4 @@
+for s in \
+a; do
+ echo "a:[$s]"
+done
diff --git a/shell/hush.c b/shell/hush.c
index 8e95a26a6..c77700175 100644
--- a/shell/hush.c
+++ b/shell/hush.c
@@ -5075,7 +5075,6 @@ static struct pipe *parse_stream(char **pstring,
debug_printf_parse("parse_stream return %p\n", pi);
return pi;
}
- nommu_addchr(&ctx.as_string, ch);
/* Handle "'" and "\" first, as they won't play nice with
* i_peek_and_eat_bkslash_nl() anyway:
@@ -5085,6 +5084,28 @@ static struct pipe *parse_stream(char **pstring,
* '
* would break.
*/
+ if (ch == '\\') {
+ ch = i_getch(input);
+ if (ch == '\n')
+ continue; /* drop \<newline>, get next char */
+ nommu_addchr(&ctx.as_string, '\\');
+ o_addchr(&ctx.word, '\\');
+ if (ch == EOF) {
+ /* Testcase: eval 'echo Ok\' */
+ /* bash-4.3.43 was removing backslash,
+ * but 4.4.19 retains it, most other shells too
+ */
+ continue; /* get next char */
+ }
+ /* Example: echo Hello \2>file
+ * we need to know that word 2 is quoted
+ */
+ ctx.word.has_quoted_part = 1;
+ nommu_addchr(&ctx.as_string, ch);
+ o_addchr(&ctx.word, ch);
+ continue; /* get next char */
+ }
+ nommu_addchr(&ctx.as_string, ch);
if (ch == '\'') {
ctx.word.has_quoted_part = 1;
next = i_getch(input);
@@ -5110,27 +5131,6 @@ static struct pipe *parse_stream(char **pstring,
}
continue; /* get next char */
}
- if (ch == '\\') {
- /*nommu_addchr(&ctx.as_string, '\\'); - already done */
- o_addchr(&ctx.word, '\\');
- ch = i_getch(input);
- if (ch == EOF) {
- /* Testcase: eval 'echo Ok\' */
-
-#if 0 /* bash-4.3.43 was removing backslash, but 4.4.19 retains it, most other shells too */
- /* Remove trailing '\' from ctx.as_string */
- ctx.as_string.data[--ctx.as_string.length] = '\0';
-#endif
- continue; /* get next char */
- }
- /* Example: echo Hello \2>file
- * we need to know that word 2 is quoted
- */
- ctx.word.has_quoted_part = 1;
- nommu_addchr(&ctx.as_string, ch);
- o_addchr(&ctx.word, ch);
- continue; /* get next char */
- }
next = '\0';
if (ch != '\n')
diff --git a/shell/hush_test/hush-parsing/bkslash_newline3.right b/shell/hush_test/hush-parsing/bkslash_newline3.right
new file mode 100644
index 000000000..e635074e5
--- /dev/null
+++ b/shell/hush_test/hush-parsing/bkslash_newline3.right
@@ -0,0 +1 @@
+a:[a]
diff --git a/shell/hush_test/hush-parsing/bkslash_newline3.tests b/shell/hush_test/hush-parsing/bkslash_newline3.tests
new file mode 100755
index 000000000..2accd4395
--- /dev/null
+++ b/shell/hush_test/hush-parsing/bkslash_newline3.tests
@@ -0,0 +1,4 @@
+for s in \
+a; do
+ echo "a:[$s]"
+done