From bc58bf572cf317f54580018cf12968693768228d Mon Sep 17 00:00:00 2001
From: Oliver Schmidt <ol.sc@web.de>
Date: Mon, 5 Mar 2018 22:31:10 +0100
Subject: [PATCH] Fixed -W cmdline option handling.

Reverted part of https://github.com/cc65/cc65/commit/3157e4be1ec7f2a5ac61ca45b232cd07c5e30483 as it actually introduced a regression.

It doesn't make sense to check for Arg[3] == '\0' _before_ checking Arg[2] != '\0'. This made the Win32 builds fail to correctly parse e.g. cl65 -W unused-var test.c
---
 src/cl65/main.c | 35 ++++++++++++-----------------------
 1 file changed, 12 insertions(+), 23 deletions(-)

diff --git a/src/cl65/main.c b/src/cl65/main.c
index 5a2103b24..afd3e97e3 100644
--- a/src/cl65/main.c
+++ b/src/cl65/main.c
@@ -1444,35 +1444,24 @@ int main (int argc, char* argv [])
                     /* Print version number */
                     OptVersion (Arg, 0);
                     break;
-                
+
                 case 'E':
                     /* Forward -E to compiler */
                     CmdAddArg (&CC65, Arg);  
                     DisableAssemblingAndLinking ();
                     break;
-                    
+
                 case 'W':
-                    /* avoid && with'\0' in if clauses */
-                    if (Arg[3] == '\0') {
-                        switch (Arg[2]) {
-                        case 'a':
-                            /* -Wa: Pass options to assembler */
-                            OptAsmArgs (Arg, GetArg (&I, 3));
-                            break;
-                        case 'c':
-                            /* -Wc: Pass options to compiler 
-                            ** Remember -Wc sub arguments in cc65 arg struct 
-                            */
-                            OptCCArgs (Arg, GetArg (&I, 3));
-                            break;
-                        case 'l':
-                            /* -Wl: Pass options to linker */
-                            OptLdArgs (Arg, GetArg (&I, 3));
-                            break;
-                        default:
-                            UnknownOption (Arg);
-                            break;
-                       }
+                    if (Arg[2] == 'a' && Arg[3] == '\0') {
+                        /* -Wa: Pass options to assembler */
+                        OptAsmArgs (Arg, GetArg (&I, 3));
+                    } else if (Arg[2] == 'c' && Arg[3] == '\0') {
+                        /* -Wc: Pass options to compiler */
+                        /* Remember -Wc sub arguments in cc65 arg struct */ 
+                        OptCCArgs (Arg, GetArg (&I, 3));
+                    } else if (Arg[2] == 'l' && Arg[3] == '\0') {
+                        /* -Wl: Pass options to linker */
+                        OptLdArgs (Arg, GetArg (&I, 3));
                     } else {
                         /* Anything else: Suppress warnings (compiler) */
                         CmdAddArg2 (&CC65, "-W", GetArg (&I, 2));