ash: fix ${unset_var/pattern/repl}

function                                             old     new   delta
subevalvar                                          1349    1353      +4

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

1 files changed, 2 insertions, 1 deletions

diff --git a/shell/ash.c b/shell/ash.c
index 37f9dd71b..76bf39ec2 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -7015,7 +7015,8 @@ subevalvar(char *start, char *str, int strloc,
         slash_pos = -1;
         if (repl) {
                 slash_pos = expdest - ((char *)stackblock() + strloc);
-                STPUTC('/', expdest);
+                if (!(flag & EXP_DISCARD))
+                        STPUTC('/', expdest);
                 //bb_error_msg("repl+1:'%s'", repl + 1);
                 p = argstr(repl + 1, (flag & EXP_DISCARD) | EXP_TILDE); /* EXP_TILDE: echo "${v/x/~}" expands ~ ! */
                 *repl = '/';