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vim-patch:8.2.1978: making a mapping work in all modes is complicated

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Problem:    Making a mapping work in all modes is complicated.
Solution:   Add the <Cmd> special key. (Yegappan Lakshmanan, closes vim/vim#7282,
            closes 4784, based on patch by Bjorn Linse)

957cf67d50

Change docs to match Vim if it's wording is better.
Change error numbers to match Vim.

Co-authored-by: Bram Moolenaar <Bram@vim.org>
This commit is contained in:
zeertzjq
2023-05-07 08:12:42 +08:00
parent 1cbfed03c2
commit a2b9117ca8
6 changed files with 494 additions and 21 deletions
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17
src/nvim/getchar.c
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@@ -134,6 +134,10 @@ static size_t last_recorded_len = 0; // number of last recorded chars
#endif
static const char e_recursive_mapping[] = N_("E223: Recursive mapping");
static const char e_cmd_mapping_must_end_with_cr[]
= N_("E1135: <Cmd> mapping must end with <CR>");
static const char e_cmd_mapping_must_end_with_cr_before_second_cmd[]
= N_("E1136: <Cmd> mapping must end with <CR> before second <Cmd>");
// Free and clear a buffer.
void free_buff(buffheader_T *buf)
@@ -2884,7 +2888,8 @@ int fix_input_buffer(uint8_t *buf, int len)
return len;
}
/// Get command argument for <Cmd> key
/// Function passed to do_cmdline() to get the command after a <Cmd> key from
/// typeahead.
char *getcmdkeycmd(int promptc, void *cookie, int indent, bool do_concat)
{
garray_T line_ga;
@@ -2894,6 +2899,7 @@ char *getcmdkeycmd(int promptc, void *cookie, int indent, bool do_concat)
ga_init(&line_ga, 1, 32);
// no mapping for these characters
no_mapping++;
got_int = false;
@@ -2903,16 +2909,17 @@ char *getcmdkeycmd(int promptc, void *cookie, int indent, bool do_concat)
if (vgetorpeek(false) == NUL) {
// incomplete <Cmd> is an error, because there is not much the user
// could do in this state.
emsg(e_cmdmap_err);
emsg(_(e_cmd_mapping_must_end_with_cr));
aborted = true;
break;
}
// Get one character at a time.
c1 = vgetorpeek(true);
// Get two extra bytes for special keys
if (c1 == K_SPECIAL) {
c1 = vgetorpeek(true); // no mapping for these chars
c1 = vgetorpeek(true);
c2 = vgetorpeek(true);
if (c1 == KS_MODIFIER) {
cmod = c2;
@@ -2928,8 +2935,8 @@ char *getcmdkeycmd(int promptc, void *cookie, int indent, bool do_concat)
} else if (c1 == ESC) {
aborted = true;
} else if (c1 == K_COMMAND) {
// special case to give nicer error message
emsg(e_cmdmap_repeated);
// give a nicer error message for this special case
emsg(_(e_cmd_mapping_must_end_with_cr_before_second_cmd));
aborted = true;
} else if (c1 == K_SNR) {
ga_concat(&line_ga, "<SNR>");