ash,hush: make trap output short signal names, without SIG prefix

function                                             old     new   delta
evalvar                                             1373    1371      -2
builtin_trap                                         457     441     -16
trapcmd                                              260     236     -24

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

1 files changed, 5 insertions, 2 deletions

diff --git a/shell/hush.c b/shell/hush.c
index d75b0da7e..b515eabd2 100644
--- a/shell/hush.c
+++ b/shell/hush.c
@@ -7111,8 +7111,11 @@ static int FAST_FUNC builtin_trap(char **argv)
                         if (G.traps[i]) {
                                 printf("trap -- ");
                                 print_escaped(G.traps[i]);
-                                /* bash compat: it says SIGxxx, not just xxx */
-                                printf(" %s%s\n", i == 0 ? "" : "SIG", get_signame(i));
+                                /* note: bash adds "SIG", but only if invoked
+                                 * as "bash". If called as "sh", or if set -o posix,
+                                 * then it prints short signal names.
+                                 * We are printing short names: */
+                                printf(" %s\n", get_signame(i));
                         }
                 }
                 /*fflush(stdout); - done after each builtin anyway */