-# Copyright 2002 Free Software Foundation, Inc.
+# Copyright 2002, 2003, 2007 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
}
set env(INPUTRC) "/dev/null"
+# The arrow key test relies on the standard VT100 bindings, so make
+# sure that an appropriate terminal is selected. The same bug
+# doesn't show up if we use ^P / ^N instead.
+if [info exists env(TERM)] {
+ set old_term $env(TERM)
+}
+set env(TERM) "vt100"
+
gdb_start
gdb_reinitialize_dir $srcdir/$subdir
"p 5" "" \
"end" ".* = 5"
+# Verify that arrow keys work in secondary prompts. The control
+# sequence is a hard-coded VT100 up arrow.
+gdb_test "print 42" "\\\$\[0-9\]* = 42"
+set msg "arrow keys with secondary prompt"
+gdb_test_multiple "if 1 > 0\n\033\[A\033\[A\nend" $msg {
+ -re ".*\\\$\[0-9\]* = 42\r\n$gdb_prompt $" {
+ pass $msg
+ }
+ -re ".*Undefined command:.*$gdb_prompt $" {
+ fail $msg
+ }
+}
# Now repeat the first test with a history file that fills the entire
# history list.
#include "doublest.h"
#include "gdb_assert.h"
#include "main.h"
+#include "event-loop.h"
/* readline include files */
#include "readline/readline.h"
}
/* This is like readline(), but it has some gdb-specific behavior.
- gdb can use readline in both the synchronous and async modes during
+ gdb may want readline in both the synchronous and async modes during
a single gdb invocation. At the ordinary top-level prompt we might
be using the async readline. That means we can't use
rl_pre_input_hook, since it doesn't work properly in async mode.
However, for a secondary prompt (" >", such as occurs during a
- `define'), gdb just calls readline() directly, running it in
- synchronous mode. So for operate-and-get-next to work in this
- situation, we have to switch the hooks around. That is what
- gdb_readline_wrapper is for. */
+ `define'), gdb wants a synchronous response.
+
+ We used to call readline() directly, running it in synchronous
+ mode. But mixing modes this way is not supported, and as of
+ readline 5.x it no longer works; the arrow keys come unbound during
+ the synchronous call. So we make a nested call into the event
+ loop. That's what gdb_readline_wrapper is for. */
+
+/* A flag set as soon as gdb_readline_wrapper_line is called; we can't
+ rely on gdb_readline_wrapper_result, which might still be NULL if
+ the user types Control-D for EOF. */
+static int gdb_readline_wrapper_done;
+
+/* The result of the current call to gdb_readline_wrapper, once a newline
+ is seen. */
+static char *gdb_readline_wrapper_result;
+
+/* Any intercepted hook. Operate-and-get-next sets this, expecting it
+ to be called after the newline is processed (which will redisplay
+ the prompt). But in gdb_readline_wrapper we will not get a new
+ prompt until the next call, or until we return to the event loop.
+ So we disable this hook around the newline and restore it before we
+ return. */
+static void (*saved_after_char_processing_hook) (void);
+
+/* This function is called when readline has seen a complete line of
+ text. */
+
+static void
+gdb_readline_wrapper_line (char *line)
+{
+ gdb_assert (!gdb_readline_wrapper_done);
+ gdb_readline_wrapper_result = line;
+ gdb_readline_wrapper_done = 1;
+
+ /* Prevent operate-and-get-next from acting too early. */
+ saved_after_char_processing_hook = after_char_processing_hook;
+ after_char_processing_hook = NULL;
+}
+
+struct gdb_readline_wrapper_cleanup
+ {
+ void (*handler_orig) (char *);
+ char *prompt_orig;
+ int already_prompted_orig;
+ };
+
+static void
+gdb_readline_wrapper_cleanup (void *arg)
+{
+ struct gdb_readline_wrapper_cleanup *cleanup = arg;
+
+ gdb_assert (rl_already_prompted == 1);
+ rl_already_prompted = cleanup->already_prompted_orig;
+ PROMPT (0) = cleanup->prompt_orig;
+
+ gdb_assert (input_handler == gdb_readline_wrapper_line);
+ input_handler = cleanup->handler_orig;
+ gdb_readline_wrapper_result = NULL;
+ gdb_readline_wrapper_done = 0;
+
+ after_char_processing_hook = saved_after_char_processing_hook;
+ saved_after_char_processing_hook = NULL;
+
+ xfree (cleanup);
+}
+
char *
gdb_readline_wrapper (char *prompt)
{
- /* Set the hook that works in this case. */
+ struct cleanup *back_to;
+ struct gdb_readline_wrapper_cleanup *cleanup;
+ char *retval;
+
+ cleanup = xmalloc (sizeof (*cleanup));
+ cleanup->handler_orig = input_handler;
+ input_handler = gdb_readline_wrapper_line;
+
+ cleanup->prompt_orig = get_prompt ();
+ PROMPT (0) = prompt;
+ cleanup->already_prompted_orig = rl_already_prompted;
+
+ back_to = make_cleanup (gdb_readline_wrapper_cleanup, cleanup);
+
+ /* Display our prompt and prevent double prompt display. */
+ display_gdb_prompt (NULL);
+ rl_already_prompted = 1;
+
if (after_char_processing_hook)
- {
- rl_pre_input_hook = (Function *) after_char_processing_hook;
- after_char_processing_hook = NULL;
- }
+ (*after_char_processing_hook) ();
+ gdb_assert (after_char_processing_hook == NULL);
+
+ /* gdb_do_one_event argument is unused. */
+ while (gdb_do_one_event (NULL) >= 0)
+ if (gdb_readline_wrapper_done)
+ break;
- return readline (prompt);
+ retval = gdb_readline_wrapper_result;
+ do_cleanups (back_to);
+ return retval;
}
\f
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