diff options
| author | zeertzjq <zeertzjq@outlook.com> | 2022-04-27 11:58:01 +0100 |
|---|---|---|
| committer | Bram Moolenaar <Bram@vim.org> | 2022-04-27 11:58:01 +0100 |
| commit | 12e21e387b5bbc928097abf1c189b7dc665838fc (patch) | |
| tree | 71ec4c8aa2bb205ec22780ba1ed687b17f600287 /src/getchar.c | |
| parent | fc78a0369e0d371a1a85d07045ff25d8695e8f8c (diff) | |
patch 8.2.4833: failure of mapping not checked forv8.2.4833
Problem: Failure of mapping not checked for.
Solution: Check return value of ins_typebuf(). (closes #10299)
Diffstat (limited to 'src/getchar.c')
| -rw-r--r-- | src/getchar.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/src/getchar.c b/src/getchar.c index e208dd1a18..e6879c60d9 100644 --- a/src/getchar.c +++ b/src/getchar.c @@ -2363,7 +2363,7 @@ at_ctrl_x_key(void) * into just a key, apply that. * Check from typebuf.tb_buf[typebuf.tb_off] to typebuf.tb_buf[typebuf.tb_off * + "max_offset"]. - * Return the length of the replaced bytes, zero if nothing changed. + * Return the length of the replaced bytes, 0 if nothing changed, -1 for error. */ static int check_simplify_modifier(int max_offset) @@ -2397,7 +2397,15 @@ check_simplify_modifier(int max_offset) vgetc_char = c; vgetc_mod_mask = tp[2]; } - len = mb_char2bytes(new_c, new_string); + if (IS_SPECIAL(new_c)) + { + new_string[0] = K_SPECIAL; + new_string[1] = K_SECOND(new_c); + new_string[2] = K_THIRD(new_c); + len = 3; + } + else + len = mb_char2bytes(new_c, new_string); if (modifier == 0) { if (put_string_in_typebuf(offset, 4, new_string, len, @@ -2424,6 +2432,7 @@ check_simplify_modifier(int max_offset) * - When nothing mapped and typeahead has a character: return map_result_get. * - When there is no match yet, return map_result_nomatch, need to get more * typeahead. + * - On failure (out of memory) return map_result_fail. */ static int handle_mapping( @@ -2706,7 +2715,12 @@ handle_mapping( // If no termcode matched, try to include the modifier into the // key. This is for when modifyOtherKeys is working. if (keylen == 0 && !no_reduce_keys) + { keylen = check_simplify_modifier(max_mlen + 1); + if (keylen < 0) + // ins_typebuf() failed + return map_result_fail; + } // When getting a partial match, but the last characters were not // typed, don't wait for a typed character to complete the |