readline/readline-5.2-conf.patch

---
 lib/readline/bind.c          |   55 ++++++++++++++++++++++++++++++++++++++++++++-----------
 lib/readline/doc/rluser.texi |    3 ++-
 lib/readline/rlconf.h        |    2 +-
 3 files changed, 47 insertions(+), 13 deletions(-)

--- lib/readline/bind.c
+++ lib/readline/bind.c	2018-11-29 08:33:08.921317296 +0000
@@ -850,6 +850,9 @@ rl_function_of_keyseq_len (const char *k
 /* The last key bindings file read. */
 static char *last_readline_init_file = (char *)NULL;
 
+/* Flag to read system init file */
+static int read_system_init_file = 0;
+
 /* The file we're currently reading key bindings from. */
 static const char *current_readline_init_file;
 static int current_readline_init_include_level;
@@ -917,11 +920,14 @@ rl_re_read_init_file (int count, int ign
   return r;
 }
 
+/* Forward declarations */
+static int sv_bell_style PARAMS((const char *));
+
 /* Do key bindings from a file.  If FILENAME is NULL it defaults
    to the first non-null filename from this list:
      1. the filename used for the previous call
      2. the value of the shell variable `INPUTRC'
-     3. ~/.inputrc
+     3. /etc/inputrc and ~/.inputrc
      4. /etc/inputrc
    If the file existed and could be opened and read, 0 is returned,
    otherwise errno is returned. */
@@ -930,18 +936,39 @@ rl_read_init_file (const char *filename)
 {
   /* Default the filename. */
   if (filename == 0)
-    filename = last_readline_init_file;
-  if (filename == 0)
-    filename = sh_get_env_value ("INPUTRC");
-  if (filename == 0 || *filename == 0)
+    {
+      filename = last_readline_init_file;
+      if (filename == 0)
+        {
+	  filename = sh_get_env_value ("INPUTRC");
+	  read_system_init_file = 0;
+	}
+      if (filename == 0)
+        {
+	  filename = DEFAULT_INPUTRC;
+	  read_system_init_file = 1;
+	}
+    }
+
+  if (*filename == 0)
     {
       filename = DEFAULT_INPUTRC;
-      /* Try to read DEFAULT_INPUTRC; fall back to SYS_INPUTRC on failure */
-      if (_rl_read_init_file (filename, 0) == 0)
-	return 0;
-      filename = SYS_INPUTRC;
+      read_system_init_file = 1;
     }
 
+  sv_bell_style(sh_get_env_value("DEFAULT_BELL_STYLE"));
+
+  if (read_system_init_file)
+    if (filename == last_readline_init_file)
+      {
+	filename = savestring (filename);
+        _rl_read_init_file (SYS_INPUTRC, 0);
+	free (last_readline_init_file);
+	last_readline_init_file = filename;
+      }
+    else
+      _rl_read_init_file (SYS_INPUTRC, 0);
+
 #if defined (__MSDOS__)
   if (_rl_read_init_file (filename, 0) == 0)
     return 0;
@@ -1681,7 +1708,14 @@ remove_trailing:
 	  rl_macro_bind (seq, &funname[1], _rl_keymap);
 	}
       else
-	rl_bind_keyseq (seq, rl_named_function (funname));
+	{
+#if defined (PREFIX_META_HACK)
+	  if (_rl_stricmp (funname, "prefix-meta") == 0)
+	    rl_generic_bind (ISKMAP, seq, (char *)emacs_meta_keymap, _rl_keymap);
+	  else
+#endif
+	  rl_bind_keyseq (seq, rl_named_function (funname));
+	}
 
       xfree (seq);
       return 0;
@@ -1850,7 +1884,6 @@ typedef int _rl_sv_func_t PARAMS((const
 #define V_INT		2
 
 /* Forward declarations */
-static int sv_bell_style PARAMS((const char *));
 static int sv_combegin PARAMS((const char *));
 static int sv_dispprefix PARAMS((const char *));
 static int sv_compquery PARAMS((const char *));
--- lib/readline/doc/rluser.texi
+++ lib/readline/doc/rluser.texi	2018-11-29 08:33:08.921317296 +0000
@@ -349,7 +349,8 @@ file is taken from the value of the envi
 @end ifclear
 that variable is unset, the default is @file{~/.inputrc}.  If that
 file does not exist or cannot be read, the ultimate default is
-@file{/etc/inputrc}.
+@file{/etc/inputrc}. If both @file{~/.inputrc} and @file{/etc/inputrc}
+exist Readline will read first @file{/etc/inputrc} and then @file{~/.inputrc}.
 
 When a program which uses the Readline library starts up, the
 init file is read, and the key bindings are set.
--- lib/readline/rlconf.h
+++ lib/readline/rlconf.h	2018-11-29 08:33:08.921317296 +0000
@@ -37,7 +37,7 @@
 #define HANDLE_SIGNALS
 
 /* Ugly but working hack for binding prefix meta. */
-#define PREFIX_META_HACK
+#undef PREFIX_META_HACK
 
 /* The next-to-last-ditch effort file name for a user-specific init file. */
 #define DEFAULT_INPUTRC "~/.inputrc"