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-rw-r--r--ChangeLog3
-rw-r--r--Src/prompt.c6
2 files changed, 9 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog
index c39b470ce..aeb465af2 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
2008-09-15 Peter Stephenson <pws@csr.com>
+ * 25672: prompt.c: Resolve string containing only a Nularg
+ to empty string to avoid interpretation as glitch space.
+
* 25671: Src/builtin.c, Test/B02typeset.ztst: non-existent
variable in typeset -p should cause status 1.
diff --git a/Src/prompt.c b/Src/prompt.c
index 72ba2e244..36eaca3e9 100644
--- a/Src/prompt.c
+++ b/Src/prompt.c
@@ -169,6 +169,12 @@ promptexpand(char *s, int ns, char *rs, char *Rs, unsigned int *txtchangep)
s = dupstring(s);
if (!parsestr(s))
singsub(&s);
+ /*
+ * We don't need the special Nularg hack here and we're
+ * going to be using Nularg for other things.
+ */
+ if (*s == Nularg && s[1] == '\0')
+ *s = '\0';
/* Ignore errors and status change in prompt substitution */
errflag = olderr;