Improve commenting/exit handling in binscripts

1 files changed, 8 insertions, 1 deletions

diff --git a/bin/stws b/bin/stws
index a955d022..f48ef76f 100755
--- a/bin/stws
+++ b/bin/stws
@@ -1,12 +1,19 @@
 #!/bin/sh
 # Strip trailing spaces on one or more files
+
+# Check arguments
 if [ "$#" -eq 0 ] ; then
     printf >&2 'tstf: Need a filename\n'
     exit 2
 fi
+
+# Iterate over arguments and apply the same ed(1) script to each of them
 for fn ; do
-    ed -s -- "$fn" <<'EOF'
+    ed -s -- "$fn" <<'EOF' || ex=1
 g/  *$/ s/  *$//
 w
 EOF
 done
+
+# If any of the ed(1) commands failed, we should exit with 1
+exit "${ex:-0}"