Fix ``#!`` parsing problems in Windows ``.exe`` script wrappers, when there

was whitespace inside a quoted argument or at the end of the ``#!`` line
(backport from trunk)

--HG--
branch : setuptools-0.6
extra : convert_revision : svn%3A6015fed2-1504-0410-9fe1-9d1591cc4771/sandbox/branches/setuptools-0.6%4053548

1 files changed, 4 insertions, 4 deletions

diff --git a/launcher.c b/launcher.c
index b1da7725..09e2bafb 100755
--- a/launcher.c
+++ b/launcher.c
@@ -129,6 +129,7 @@ char **parse_argv(char *cmdline, int *argc)
     char *output = cmdline;
     char c;
     int nb = 0;
+    int iq = 0;
     *argc = 0;
 
     result[0] = output;
@@ -136,19 +137,20 @@ char **parse_argv(char *cmdline, int *argc)
 
     do {
         c = *cmdline++;
-        if (!c || isspace(c)) {
+        if (!c || (isspace(c) && !iq)) {
             while (nb) {*output++ = '\\'; nb--; }
             *output++ = 0;
             result[++*argc] = output;
             if (!c) return result;
             while (isspace(*cmdline)) cmdline++;  /* skip leading spaces */
+            if (!*cmdline) return result;  /* avoid empty arg if trailing ws */
             continue;
         }
         if (c == '\\')
             ++nb;   /* count \'s */
         else {
             if (c == '"') {
-                if (!(nb & 1)) c = 0;   /* skip " unless odd # of \ */
+                if (!(nb & 1)) { iq = !iq; c = 0; }  /* skip " unless odd # of \ */
                 nb = nb >> 1;   /* cut \'s in half */
             }
             while (nb) {*output++ = '\\'; nb--; }
@@ -160,8 +162,6 @@ char **parse_argv(char *cmdline, int *argc)
 
 
 
-
-
 int run(int argc, char **argv, int is_gui) {
 
     char python[256];   /* python executable's filename*/