Added some help messages.

1 files changed, 9 insertions, 1 deletions

diff --git a/scripts/mk2knr.pl b/scripts/mk2knr.pl
index 29f94a188..aaf4963b1 100755
--- a/scripts/mk2knr.pl
+++ b/scripts/mk2knr.pl
@@ -19,6 +19,8 @@ $convertme = 'convertme.pl';
 $convert = 0;
 %converted = ();
 
+# if no files were specified, print usage
+die "usage: $0 file.c | file.h\n" if scalar(@ARGV) == 0;
 
 # prepare the "convert me" file
 open(CM, ">$convertme") or die "convertme.pl $!";
@@ -29,7 +31,7 @@ while (<>) {
 
         # if the line says "getopt" in it anywhere, we don't want to muck with it
         # because option lists tend to include strings like "cxtzvOf:" which get
-        # matched by the javaStyle / Hungarian and PascalStyle regexps below
+        # matched by the "check for mixed case" regexps below
         next if /getopt/;
 
         # tokenize the string into just the variables
@@ -45,6 +47,9 @@ while (<>) {
                 # this checks for PascalStyle
                 $convert++ if ($var =~ /^[A-Z][a-z]+[A-Z][a-z]+/);
 
+                # if we want to add more checks, we can add 'em here, but the above
+                # checks catch "just enough" and not too much, so prolly not.
+
                 if ($convert) {
                         $convert = 0;
 
@@ -74,3 +79,6 @@ while (<>) {
 close(CM);
 chmod 0755, $convertme;
 
+# print a helpful help message
+print "Done. Scheduled name changes are in $convertme.\n";
+print "Please review/modify it and then type ./$convertme to do the search & replace.\n";