ash: if !ENABLE_ASH_EXPAND_PRMT, disable PSSYNTAX code

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 8 insertions, 2 deletions

diff --git a/shell/ash.c b/shell/ash.c
index e2b4eee95..52fcc7944 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -2494,7 +2494,9 @@ static const char *expandstr(const char *ps, int syntax_type);
 #define DQSYNTAX   1    /* in double quotes */
 #define SQSYNTAX   2    /* in single quotes */
 #define ARISYNTAX  3    /* in arithmetic */
-#define PSSYNTAX   4    /* prompt. never passed to SIT() */
+#if ENABLE_ASH_EXPAND_PRMT
+# define PSSYNTAX  4    /* prompt. never passed to SIT() */
+#endif
 /* PSSYNTAX expansion is identical to DQSYNTAX, except keeping '\$' as '\$' */
 
 /*
@@ -11594,9 +11596,13 @@ readtoken1(int c, int syntax, char *eofmark, int striptabs)
         bqlist = NULL;
         quotef = 0;
         IF_FEATURE_SH_MATH(prevsyntax = 0;)
+#if ENABLE_ASH_EXPAND_PRMT
         pssyntax = (syntax == PSSYNTAX);
         if (pssyntax)
                 syntax = DQSYNTAX;
+#else
+        pssyntax = 0; /* constant */
+#endif
         dblquote = (syntax == DQSYNTAX);
         varnest = 0;
         IF_FEATURE_SH_MATH(arinest = 0;)
@@ -11650,7 +11656,7 @@ readtoken1(int c, int syntax, char *eofmark, int striptabs)
                         } else if (c == '\n') {
                                 nlprompt();
                         } else {
-                                if (c == '$' && pssyntax) {
+                                if (pssyntax && c == '$') {
                                         USTPUTC(CTLESC, out);
                                         USTPUTC('\\', out);
                                 }