From 3278b75942bdbe706f7a0fba87729bb1e935b68b Mon Sep 17 00:00:00 2001
From: Bryan Newbold <bnewbold@robocracy.org>
Date: Mon, 20 Feb 2017 00:05:25 -0800
Subject: Import Upstream version 5d2

---
 script.c | 49 +++++++++++++++++++++++++++++++++++++------------
 1 file changed, 37 insertions(+), 12 deletions(-)

(limited to 'script.c')

diff --git a/script.c b/script.c
index e1a63f1..efeaf5b 100644
--- a/script.c
+++ b/script.c
@@ -1,18 +1,18 @@
-/* Copyright (C) 1994, 1995, 1996, 1997 Free Software Foundation, Inc.
- * 
+/* Copyright (C) 1994-1999 Free Software Foundation, Inc.
+ *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2, or (at your option)
  * any later version.
- * 
+ *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU General Public License
  * along with this software; see the file COPYING.  If not, write to
- * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+ * the Free Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111, USA.
  *
  * As a special exception, the Free Software Foundation gives permission
  * for additional uses of the text contained in its release of GUILE.
@@ -36,7 +36,7 @@
  *
  * If you write modifications of your own for GUILE, it is your choice
  * whether to permit this exception to apply to your modifications.
- * If you do not wish that, delete this exception notice.  
+ * If you do not wish that, delete this exception notice.
  */
 
 /* "script.c" argv tricks for `#!' scripts.
@@ -140,10 +140,13 @@ char *script_find_executable(name)
   if (!f) return 0L;
   if ((fgetc(f)=='#') && (fgetc(f)=='!')) {
     while (1) switch (tbuf[i++] = fgetc(f)) {
-    case /*WHITE_SPACES*/ ' ':case '\t':case '\r':case '\f':
+    case ' ':
+      if (1==i) {i--; break;}
+    case '\t':case '\r':case '\f':
     case EOF:
       tbuf[--i] = 0;
       fclose(f);
+      if (0==i) return 0L;
       return scm_cat_path(0L, tbuf, 0L);
     }
   }
@@ -172,7 +175,7 @@ char *dld_find_executable(file)
    implementation-vicinity of this program.  Returns a newly allocated
    string if successful, 0 if not */
 
-char *scm_find_impl_file(exec_path, generic_name, initname, sep)
+char *find_impl_file(exec_path, generic_name, initname, sep)
      char *exec_path;
      const char *generic_name, *initname, *sep;
 {
@@ -234,13 +237,35 @@ char *scm_find_impl_file(exec_path, generic_name, initname, sep)
 	for(peer="lib";!0;peer="src") {
 	  path = scm_cat_path(0L, exec_path, sepind);
 	  if (path) {
-	    strncpy(path + sepind - 4, "lib", 3);
+	    strncpy(path + sepind - 4, peer, 3);
 	    path = scm_cat_path(path, generic_name, 0L);
 	    path = scm_sep_init_try(path, sep, initname);
 	    if (path) return path;
 	  }
 	  if (!strcmp(peer,"src")) break;
-	}}}
+	}}
+
+      /* Look for initname in executable-name peer directory. */
+      path = scm_cat_path(0L, exec_path, sepind);
+      if (path) {
+	path[sepind - 4] = 0;
+	path = scm_cat_path(path, &exec_path[sepind], 0L);
+	path = scm_sep_init_try(path, sep, initname);
+	if (path) return path;
+      }
+
+      if (generic_name) {
+
+	/* Look for initname in generic peer directory. */
+	path = scm_cat_path(0L, exec_path, sepind);
+	if (path) {
+	  path[sepind - 4] = 0;
+	  path = scm_cat_path(path, generic_name, 0L);
+	  path = scm_sep_init_try(path, sep, initname);
+	  if (path) return path;
+	}
+      }
+    }
 
 #ifdef MSDOS
     if (strlen(extptr)) {
@@ -367,8 +392,8 @@ char **script_process_argv(argc, argv)
       if (!(nargv = (char **)realloc(nargv, (1 + ++nargc) * sizeof(char*))))
 	return 0L;
       else nargv[nargi++] = narg;
-    fclose(f);
-    nargv[nargi++] = argv[argi++];
+      fclose(f);
+      nargv[nargi++] = argv[argi++];
     }
   }
   while (argi <= argc) nargv[nargi++] = argv[argi++];
-- 
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