Change rl_complete() and rl_list_possib() to be function pointers instead.

This is a much cleaner design and also works with or without the configure
--enable-default-complete option.

See the examples for details.

configure

@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.61 for Minix editline 0.2.1.
+# Generated by GNU Autoconf 2.61 for Minix editline 0.2.2.
 #
 # Report bugs to <joachim@vmlinux.org>.
 #
@@ -574,8 +574,8 @@ SHELL=${CONFIG_SHELL-/bin/sh}
 # Identity of this package.
 PACKAGE_NAME='Minix editline'
 PACKAGE_TARNAME='minix-editline'
-PACKAGE_VERSION='0.2.1'
+PACKAGE_VERSION='0.2.2'
-PACKAGE_STRING='Minix editline 0.2.1'
+PACKAGE_STRING='Minix editline 0.2.2'
 PACKAGE_BUGREPORT='joachim@vmlinux.org'
 
 ac_unique_file="src/editline.c"
@@ -1210,7 +1210,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures Minix editline 0.2.1 to adapt to many kinds of systems.
+\`configure' configures Minix editline 0.2.2 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1276,7 +1276,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of Minix editline 0.2.1:";;
+     short | recursive ) echo "Configuration of Minix editline 0.2.2:";;
    esac
   cat <<\_ACEOF
 
@@ -1361,7 +1361,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-Minix editline configure 0.2.1
+Minix editline configure 0.2.2
 generated by GNU Autoconf 2.61
 
 Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
@@ -1375,7 +1375,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by Minix editline $as_me 0.2.1, which was
+It was created by Minix editline $as_me 0.2.2, which was
 generated by GNU Autoconf 2.61.  Invocation command line was
 
   $ $0 $@
@@ -2070,7 +2070,7 @@ fi
 
 # Define the identity of the package.
  PACKAGE='minix-editline'
- VERSION='0.2.1'
+ VERSION='0.2.2'
 
 
 cat >>confdefs.h <<_ACEOF
@@ -4973,9 +4973,9 @@ fi
 done
 
 
-# Check whether --enable-complete was given.
+# Check whether --enable-default-complete was given.
-if test "${enable_complete+set}" = set; then
+if test "${enable_default_complete+set}" = set; then
-  enableval=$enable_complete;
+  enableval=$enable_default_complete;
    case "${enableval}" in
        yes)
         complete=true
@@ -5421,7 +5421,7 @@ exec 6>&1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by Minix editline $as_me 0.2.1, which was
+This file was extended by Minix editline $as_me 0.2.2, which was
 generated by GNU Autoconf 2.61.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -5474,7 +5474,7 @@ Report bugs to <bug-autoconf@gnu.org>."
 _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF
 ac_cs_version="\\
-Minix editline config.status 0.2.1
+Minix editline config.status 0.2.2
 configured by $0, generated by GNU Autoconf 2.61,
   with options \\"`echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`\\"
 

configure.ac

@@ -2,7 +2,7 @@
 # Process this file with autoconf to produce a configure script.
 
 AC_PREREQ(2.61)
-AC_INIT(Minix editline, 0.2.1, joachim@vmlinux.org)
+AC_INIT(Minix editline, 0.2.2, joachim@vmlinux.org)
 AC_CONFIG_SRCDIR([src/editline.c])
 AC_CONFIG_HEADER([config.h])
 
@@ -40,7 +40,7 @@ AC_PROG_GCC_TRADITIONAL
 AC_FUNC_STAT
 AC_CHECK_FUNCS([strchr strdup strrchr tcgetattr])
 
-AC_ARG_ENABLE([complete],
+AC_ARG_ENABLE([default-complete],
    [  --enable-default-complete      Enable default completion handler.],[
    case "${enableval}" in
        yes)

examples/Makefile.am

@@ -5,6 +5,3 @@ AM_CFLAGS = -I$(top_srcdir)/src -I$(top_srcdir)/include
 
 # TODO: Port "fileman" example from BSD editline
 noinst_PROGRAMS = testit cli
-
-testit_SOURCES = testit.c
-#fileman_SOURCES = fileman.c

examples/Makefile.in

@@ -45,8 +45,8 @@ cli_SOURCES = cli.c
 cli_OBJECTS = cli.$(OBJEXT)
 cli_LDADD = $(LDADD)
 cli_DEPENDENCIES = $(top_builddir)/src/libedit.a
-am_testit_OBJECTS = testit.$(OBJEXT)
+testit_SOURCES = testit.c
-testit_OBJECTS = $(am_testit_OBJECTS)
+testit_OBJECTS = testit.$(OBJEXT)
 testit_LDADD = $(LDADD)
 testit_DEPENDENCIES = $(top_builddir)/src/libedit.a
 DEFAULT_INCLUDES = -I.@am__isrc@ -I$(top_builddir)
@@ -56,8 +56,8 @@ COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
 	$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
 CCLD = $(CC)
 LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@
-SOURCES = cli.c $(testit_SOURCES)
+SOURCES = cli.c testit.c
-DIST_SOURCES = cli.c $(testit_SOURCES)
+DIST_SOURCES = cli.c testit.c
 ETAGS = etags
 CTAGS = ctags
 DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
@@ -149,7 +149,6 @@ top_srcdir = @top_srcdir@
 AUTOMAKE_OPTIONS = foreign
 LDADD = $(top_builddir)/src/libedit.a
 AM_CFLAGS = -I$(top_srcdir)/src -I$(top_srcdir)/include
-testit_SOURCES = testit.c
 all: all-am
 
 .SUFFIXES:
@@ -389,7 +388,6 @@ uninstall-am:
 	mostlyclean-generic pdf pdf-am ps ps-am tags uninstall \
 	uninstall-am
 
-#fileman_SOURCES = fileman.c
 # Tell versions [3.59,3.63) of GNU make to not export all variables.
 # Otherwise a system limit (for SysV at least) may be exceeded.
 .NOEXPORT:

examples/cli.c

@@ -1,6 +1,4 @@
-/* The "testit" micro shell, now with command completion. 
+/* Custom CLI command completion.  */
- * To be able to run, don't "--enable-default-complete".
- */
 #include "editline.h"
 #include <string.h>
 
@@ -12,7 +10,7 @@ char *list[] = {
 **  Attempt to complete the pathname, returning an allocated copy.
 **  Fill in *unique if we completed it, or set it to 0 if ambiguous.
 */
-char *rl_complete(char *token, int *match)
+char *my_rl_complete(char *token, int *match)
 {
    int i;
    int index = -1;
@@ -43,7 +41,7 @@ char *rl_complete(char *token, int *match)
 /*
 **  Return all possible completions.
 */
-int rl_list_possib(char *token, char ***av)
+int my_rl_list_possib(char *token, char ***av)
 {
    int i, num, total = 0;
    char **copy;
@@ -69,6 +67,10 @@ int main(int ac, char *av[])
    char *line;
    char	*prompt = "cli> ";
 
+   /* Setup callbacks */
+   rl_complete = &my_rl_complete;
+   rl_list_possib = &my_rl_list_possib;
+
    while ((line = readline(prompt)) != NULL) {
       (void)printf("\t\t\t|%s|\n", line);
       free(line);

include/editline.h

@@ -2,6 +2,11 @@
 #ifndef __EDITLINE_H__
 #define __EDITLINE_H__
 
+/* Assign these to get command completion, see cli.c for
+ * example usage. */
+char *(*rl_complete)(char *token, int *match);
+int (*rl_list_possib)(char *token, char ***av);
+
 /*
 **  For compatibility with FSF readline.
 */

src/Makefile.am

@@ -6,4 +6,5 @@ libedit_a_SOURCES  = editline.c editline.h sysunix.c unix.h
 if COMPLETE
 # Built-in completion handler.
 libedit_a_SOURCES += complete.c
+AM_CPPFLAGS       = -DCOMPLETE
 endif

src/Makefile.in

@@ -161,6 +161,7 @@ AUTOMAKE_OPTIONS = foreign
 lib_LIBRARIES = libedit.a
 libedit_a_SOURCES = editline.c editline.h sysunix.c unix.h \
 	$(am__append_1)
+@COMPLETE_TRUE@AM_CPPFLAGS = -DCOMPLETE
 all: all-am
 
 .SUFFIXES:

src/complete.c

@@ -161,7 +161,7 @@ SplitPath(path, dirpart, filepart)
 **  Fill in *unique if we completed it, or set it to 0 if ambiguous.
 */
 char *
-rl_complete(pathname, unique)
+default_rl_complete(pathname, unique)
     char	*pathname;
     int		*unique;
 {
@@ -233,7 +233,7 @@ rl_complete(pathname, unique)
 **  Return all possible completions.
 */
 int
-rl_list_possib(pathname, avp)
+default_rl_list_possib(pathname, avp)
     char	*pathname;
     char	***avp;
 {

src/editline.c

@@ -97,6 +97,11 @@ STATIC int		TTYrows;
 /* Display print 8-bit chars as `M-x' or as the actual 8-bit char? */
 int		rl_meta_chars = 1;
 
+/* User definable callbacks. */
+char *(*rl_complete)(char *token, int *match); 
+int (*rl_list_possib)(char *token, char ***av);
+
+
 /*
 **  Declarations.
 */
@@ -1033,6 +1038,20 @@ rl_reset_terminal(p)
 void
 rl_initialize(void)
 {
+#ifdef COMPLETE
+    int done = 0;
+
+    if (!done)
+    {
+        if (!rl_complete)
+            rl_complete = &default_rl_complete;
+
+        if (!rl_list_possib)
+            rl_list_possib = &default_rl_list_possib;
+
+        done = 1;
+    }
+#endif
 }
 
 char *
@@ -1042,6 +1061,9 @@ readline(prompt)
     CHAR	*line;
     int		s;
 
+    /* Unless called by the user already. */
+    rl_initialize ();
+
     if (!isatty(0)) {
 	TTYflush();
 	return read_redirected();
@@ -1177,6 +1199,10 @@ c_possible(void)
     CHAR	*word;
     int		ac;
 
+    if (!rl_list_possib) {
+        return ring_bell();
+    }
+
     word = find_word();
     ac = rl_list_possib((char *)word, (char ***)&av);
     if (word)
@@ -1200,6 +1226,10 @@ c_complete(void)
     int		unique;
     STATUS	s;
 
+    if (!rl_complete) {
+        return ring_bell();
+    }
+
     word = find_word();
     p = (CHAR *)rl_complete((char *)word, &unique);
     if (word)

src/editline.h

@@ -2,6 +2,9 @@
 **
 **  Internal header file for editline library.
 */
+#ifndef __PRIVATE_EDITLINE_H__
+#define __PRIVATE_EDITLINE_H__
+
 #include <config.h>
 #include <stdio.h>
 #ifdef HAVE_MALLOC_H
@@ -70,8 +73,10 @@ extern int	rl_quit;
 #if	defined(DO_SIGTSTP)
 extern int	rl_susp;
 #endif	/* defined(DO_SIGTSTP) */
-extern char	*rl_complete();
+#ifdef COMPLETE
-extern int	rl_list_possib(char *pathname, char ***avp);
+extern char	*default_rl_complete();
+extern int	default_rl_list_possib(char *pathname, char ***avp);
+#endif
 extern void	rl_ttyset();
 extern void	rl_add_slash();
 
@@ -93,3 +98,6 @@ extern int	strncmp();
 #if	defined(NEED_STRDUP)
 extern char	*strdup();
 #endif
+
+#include "../include/editline.h"
+#endif  /* __PRIVATE_EDITLINE_H__ */