+int
+_rl_search_getchar (cxt)
+ _rl_search_cxt *cxt;
+{
+ int c;
+
+ /* Read a key and decide how to proceed. */
+ RL_SETSTATE(RL_STATE_MOREINPUT);
+ c = cxt->lastc = rl_read_key ();
+ RL_UNSETSTATE(RL_STATE_MOREINPUT);
+
+#if defined (HANDLE_MULTIBYTE)
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ c = cxt->lastc = _rl_read_mbstring (cxt->lastc, cxt->mb, MB_LEN_MAX);
+#endif
+
+ return c;
+}
+
+/* Process just-read character C according to isearch context CXT. Return
+ -1 if the caller should just free the context and return, 0 if we should
+ break out of the loop, and 1 if we should continue to read characters. */
+int
+_rl_isearch_dispatch (cxt, c)
+ _rl_search_cxt *cxt;
+ int c;
+{
+ int n, wstart, wlen, limit, cval;
+ rl_command_func_t *f;
+
+ f = (rl_command_func_t *)NULL;
+
+ if (c < 0)
+ {
+ cxt->sflags |= SF_FAILED;
+ cxt->history_pos = cxt->last_found_line;
+ return -1;
+ }
+
+ /* If we are moving into a new keymap, modify cxt->keymap and go on.
+ This can be a problem if c == ESC and we want to terminate the
+ incremental search, so we check */
+ if (c >= 0 && cxt->keymap[c].type == ISKMAP && strchr (cxt->search_terminators, cxt->lastc) == 0)
+ {
+ cxt->keymap = FUNCTION_TO_KEYMAP (cxt->keymap, c);
+ cxt->sflags |= SF_CHGKMAP;
+ /* XXX - we should probably save this sequence, so we can do
+ something useful if this doesn't end up mapping to a command. */
+ return 1;
+ }
+
+ /* Translate the keys we do something with to opcodes. */
+ if (c >= 0 && cxt->keymap[c].type == ISFUNC)
+ {
+ f = cxt->keymap[c].function;
+
+ if (f == rl_reverse_search_history)
+ cxt->lastc = (cxt->sflags & SF_REVERSE) ? -1 : -2;
+ else if (f == rl_forward_search_history)
+ cxt->lastc = (cxt->sflags & SF_REVERSE) ? -2 : -1;
+ else if (f == rl_rubout)
+ cxt->lastc = -3;
+ else if (c == CTRL ('G') || f == rl_abort)
+ cxt->lastc = -4;
+ else if (c == CTRL ('W') || f == rl_unix_word_rubout) /* XXX */
+ cxt->lastc = -5;
+ else if (c == CTRL ('Y') || f == rl_yank) /* XXX */
+ cxt->lastc = -6;
+ }
+
+ /* If we changed the keymap earlier while translating a key sequence into
+ a command, restore it now that we've succeeded. */
+ if (cxt->sflags & SF_CHGKMAP)
+ {
+ cxt->keymap = cxt->okeymap;
+ cxt->sflags &= ~SF_CHGKMAP;
+ }
+
+ /* The characters in isearch_terminators (set from the user-settable
+ variable isearch-terminators) are used to terminate the search but
+ not subsequently execute the character as a command. The default
+ value is "\033\012" (ESC and C-J). */
+ if (cxt->lastc > 0 && strchr (cxt->search_terminators, cxt->lastc))
+ {
+ /* ESC still terminates the search, but if there is pending
+ input or if input arrives within 0.1 seconds (on systems
+ with select(2)) it is used as a prefix character
+ with rl_execute_next. WATCH OUT FOR THIS! This is intended
+ to allow the arrow keys to be used like ^F and ^B are used
+ to terminate the search and execute the movement command.
+ XXX - since _rl_input_available depends on the application-
+ settable keyboard timeout value, this could alternatively
+ use _rl_input_queued(100000) */
+ if (cxt->lastc == ESC && _rl_input_available ())
+ rl_execute_next (ESC);
+ return (0);
+ }
+
+#define ENDSRCH_CHAR(c) \
+ ((CTRL_CHAR (c) || META_CHAR (c) || (c) == RUBOUT) && ((c) != CTRL ('G')))