From a27688aa9ff9640b845e43eeda28c91a07387b58 Mon Sep 17 00:00:00 2001
From: Eli Zaretskii <eliz@gnu.org>
Date: Wed, 15 Mar 2000 11:32:18 +0000
Subject: [PATCH] (_rl_read_file): Use O_BINARY in open.  Enable the test for
 incomplete read.  Strip the CR characters by hand after readin the file.
 (rl_read_init_file): Allow for ~/_intputrc on 8+3 filesystems.

---
 readline/bind.c | 47 +++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 45 insertions(+), 2 deletions(-)

diff --git a/readline/bind.c b/readline/bind.c
index f446dc8cd10..73cd827357d 100644
--- a/readline/bind.c
+++ b/readline/bind.c
@@ -62,6 +62,10 @@ extern int errno;
 extern char *strchr (), *strrchr ();
 #endif /* !strchr && !__STDC__ */
 
+#ifndef O_BINARY
+# define O_BINARY 0
+#endif
+
 extern int _rl_horizontal_scroll_mode;
 extern int _rl_mark_modified_lines;
 extern int _rl_bell_preference;
@@ -646,7 +650,7 @@ _rl_read_file (filename, sizep)
   char *buffer;
   int i, file;
 
-  if ((stat (filename, &finfo) < 0) || (file = open (filename, O_RDONLY, 0666)) < 0)
+  if ((stat (filename, &finfo) < 0) || (file = open (filename, O_RDONLY | O_BINARY, 0666)) < 0)
     return ((char *)NULL);
 
   file_size = (size_t)finfo.st_size;
@@ -667,7 +671,7 @@ _rl_read_file (filename, sizep)
   i = read (file, buffer, file_size);
   close (file);
 
-#if 0
+#if 1
   if (i < file_size)
 #else
   if (i < 0)
@@ -678,6 +682,30 @@ _rl_read_file (filename, sizep)
     }
 
   buffer[file_size] = '\0';
+
+#if O_BINARY
+  {
+    /* Systems which distinguish between text and binary files need
+       to strip the CR characters before each Newline, otherwise the
+       parsing functions won't work.  */
+    char *s, *d;
+    size_t removed = 0;
+
+    for (s = buffer, d = buffer; s < buffer + file_size; s++)
+      {
+	if (removed)
+	  *d = *s;
+	if (*s != '\r' || s[1] != '\n')
+	  d++;
+	else
+	  removed++;
+      }
+
+    file_size -= removed;
+    buffer[file_size] = '\0';
+  }
+#endif
+
   if (sizep)
     *sizep = file_size;
   return (buffer);
@@ -699,6 +727,7 @@ rl_re_read_init_file (count, ignore)
      1. the filename used for the previous call
      2. the value of the shell variable `INPUTRC'
      3. ~/.inputrc
+     4. (for __MSDOS__ only) ~/_inputrc
    If the file existed and could be opened and read, 0 is returned,
    otherwise errno is returned. */
 int
@@ -718,6 +747,20 @@ rl_read_init_file (filename)
   if (*filename == 0)
     filename = DEFAULT_INPUTRC;
 
+#ifdef __MSDOS__
+  {
+    /* DOS doesn't allow leading dots in file names.  If the original
+       name fails (it could work if we are on Windows), fall back to
+       ~/_inputrc.  */
+    int retval = _rl_read_init_file (filename, 0);
+
+    if (retval == 0)
+      return retval;
+    else if (strcmp (filename, "~/.inputrc") == 0)
+      filename = "~/_inputrc";
+  }
+#endif
+
   return (_rl_read_init_file (filename, 0));
 }
 
-- 
2.30.2