ignore unhandled meta key sequences and escape sequences, and indicate
it on the statusbar when we get an unhandled shortcut or toggle, as Pico does git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@3554 35c25a1d-7b9e-4130-9fde-d3aeb78583b8
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@ -96,6 +96,12 @@ CVS code -
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do_page_down(), do_up(), do_scroll_up(), do_down(),
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do_scroll_down(), do_input(), do_search(), do_research(), and
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do_delete(). (DLR)
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- Ignore unhandled meta key sequences and escape sequences, and
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indicate it on the statusbar when we get an unhandled shortcut
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or toggle, as Pico does. New function is_ascii_cntrl_char();
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changes to do_input(), do_statusbar_input(), and
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parse_kbinput(). (DLR, suggested by Nick Warne and Benno
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Schulenberg)
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- browser.c:
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do_browser()
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- Reference NANO_GOTODIR_(ALT|F)?KEY instead of
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@ -120,6 +120,13 @@ bool is_blank_mbchar(const char *c)
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return isblank((unsigned char)*c);
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}
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/* This function is equivalent to iscntrl(), except in that it only
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* handles non-high-bit control characters. */
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bool is_ascii_cntrl_char(int c)
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{
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return (0 <= c && c < 32);
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}
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/* This function is equivalent to iscntrl(), except in that it also
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* handles high-bit control characters. */
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bool is_cntrl_char(int c)
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11
src/nano.c
11
src/nano.c
@ -1297,6 +1297,17 @@ int do_input(bool *meta_key, bool *func_key, bool *s_or_t, bool
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#endif
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);
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/* If we got a non-high-bit control key or a Meta key sequence, and
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* it's not a shortcut or toggle, ignore it, and indicate this on
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* the statusbar. */
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if (*s_or_t == FALSE) {
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if (is_ascii_cntrl_char(input) || *meta_key == TRUE) {
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input = ERR;
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*meta_key = FALSE;
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statusbar(_("Unknown Command"));
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}
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}
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if (allow_funcs) {
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/* If we got a character, and it isn't a shortcut or toggle,
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* it's a normal text character. Display the warning if we're
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@ -99,6 +99,15 @@ int do_statusbar_input(bool *meta_key, bool *func_key, bool *s_or_t,
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/* Set s_or_t to TRUE if we got a shortcut. */
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*s_or_t = have_shortcut;
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/* If we got a non-high-bit control key or a Meta key sequence, and
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* it's not a shortcut or toggle, ignore it. */
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if (*s_or_t == FALSE) {
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if (is_ascii_cntrl_char(input) || *meta_key == TRUE) {
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input = ERR;
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*meta_key = FALSE;
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}
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}
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if (allow_funcs) {
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/* If we got a character, and it isn't a shortcut or toggle,
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* it's a normal text character. Display the warning if we're
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@ -174,6 +174,7 @@ bool niswblank(wchar_t wc);
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bool is_byte(int c);
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bool is_alnum_mbchar(const char *c);
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bool is_blank_mbchar(const char *c);
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bool is_ascii_cntrl_char(int c);
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bool is_cntrl_char(int c);
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#ifdef ENABLE_UTF8
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bool is_cntrl_wchar(wchar_t wc);
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@ -536,10 +536,10 @@ int parse_kbinput(WINDOW *win, bool *meta_key, bool *func_key)
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&ignore_seq);
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/* If the escape sequence is unrecognized and
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* not ignored, put back all of its characters
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* except for the initial escape. */
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* not ignored, indicate this on the
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* statusbar. */
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if (retval == ERR && !ignore_seq)
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unget_input(seq, seq_len);
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statusbar(_("Unknown Command"));
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free(seq);
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}
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