Add documentation

1 files changed, 6 insertions, 3 deletions

@@ -12,8 +12,10 @@ Usage:	subtext [OPTIONS] FILE...
 Options:
  -h             Show this help and exit.
  -n             Don't run the resulting script; just print it.
+ -x             Trace sh execution (sh -x).
  -m FILE        Use macrofile FILE.
  -I DIRECTORY   Add DIRECTORY to the search path.
+ -o FILE        Output to FILE instead of stdout.
 EOF
         exit $1
 }
@@ -25,15 +27,16 @@ configure() {
         : "${ST_PIPE_SH:=true}"
         : "${ST_TRACE=+x}"
         ## Process options
-        while getopts :hm:I:no:x  OPT
+        while getopts :hnxm:I:o: OPT
         do
                 case "$OPT" in
                         (h) usage ;;
+                        (n) ST_PIPE_SH=false ;;
+                        (x) ST_TRACE=-x ;;
                         (m) ST_MACROFILE="$OPTARG.st.sh" ;;
                         (I) ST_SOPATH="$ST_SOPATH:$OPTARG" ;;
-                        (n) ST_PIPE_SH=false ;;
                         (o) exec > "$OPTARG" ;;
-                        (x) ST_TRACE=-x ;;
+                        ## bad arguments
                         (:) printf >&2 'Unknown option -%s\n' "$OPTARG";
                             usage 1 ;;
                         (*) usage 1 ;;