Doc fixes.

1 files changed, 17 insertions, 11 deletions

diff --git a/awklib/eg/prog/alarm.awk b/awklib/eg/prog/alarm.awk
index 52fae393..af7e8af1 100644
--- a/awklib/eg/prog/alarm.awk
+++ b/awklib/eg/prog/alarm.awk
@@ -1,9 +1,10 @@
 # alarm.awk --- set an alarm
 #
-# Requires gettimeofday library function
+# Requires gettimeofday() library function
 #
 # Arnold Robbins, arnold@skeeve.com, Public Domain
 # May 1993
+# Revised December 2010
 
 # usage: alarm time [ "message" [ count [ delay ] ] ]
 
@@ -17,19 +18,24 @@ BEGIN    \
         print usage1 > "/dev/stderr"
         print usage2 > "/dev/stderr"
         exit 1
-    } else if (ARGC == 5) {
+    }
+    switch (ARGC) {
+    case 5:
         delay = ARGV[4] + 0
+	# fall through
+    case 4:
         count = ARGV[3] + 0
+	# fall through
+    case 3:
         message = ARGV[2]
-    } else if (ARGC == 4) {
-        count = ARGV[3] + 0
-        message = ARGV[2]
-    } else if (ARGC == 3) {
-        message = ARGV[2]
-    } else if (ARGV[1] !~ /[0-9]?[0-9]:[0-9][0-9]/) {
-        print usage1 > "/dev/stderr"
-        print usage2 > "/dev/stderr"
-        exit 1
+	break
+    default:
+        if (ARGV[1] !~ /[[:digit:]]?[[:digit:]]:[[:digit:]][[:digit:]]/) {
+            print usage1 > "/dev/stderr"
+            print usage2 > "/dev/stderr"
+            exit 1
+	}
+	break
     }
 
     # set defaults for once we reach the desired time