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vim-patch:9.1.0814: mapset() may remove unrelated mapping (#30941)

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Problem:  mapset() may remove unrelated mapping whose {rhs} matches the
          restored mapping's {lhs}.
Solution: only match by {lhs} when unmapping for mapset() (zeertzjq).

closes: vim/vim#15935

fdf135a052
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zeertzjq 2024-10-25 07:16:54 +08:00 committed by GitHub
parent 54249d051c
commit e4a74e986c
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3 changed files with 37 additions and 9 deletions
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20
src/nvim/mapping.c
View File

@ -568,6 +568,12 @@ static int buf_do_map(int maptype, MapArguments *args, int mode, bool is_abbrev,
mapblock_T **abbr_table = args->buffer ? &buf->b_first_abbr : &first_abbr;
mapblock_T *mp_result[2] = { NULL, NULL };
bool unmap_lhs_only = false;
if (maptype == MAPTYPE_UNMAP_LHS) {
unmap_lhs_only = true;
maptype = MAPTYPE_UNMAP;
}
// For ":noremap" don't remap, otherwise do remap.
int noremap = args->script ? REMAP_SCRIPT
: maptype == MAPTYPE_NOREMAP ? REMAP_NONE : REMAP_YES;
@ -720,8 +726,8 @@ static int buf_do_map(int maptype, MapArguments *args, int mode, bool is_abbrev,
// entry with a matching 'to' part. This was done to allow ":ab foo bar"
// to be unmapped by typing ":unab foo", where "foo" will be replaced by
// "bar" because of the abbreviation.
for (int round = 0; (round == 0 || maptype == MAPTYPE_UNMAP) && round <= 1
&& !did_it && !got_int; round++) {
const int num_rounds = maptype == MAPTYPE_UNMAP && !unmap_lhs_only ? 2 : 1;
for (int round = 0; round < num_rounds && !did_it && !got_int; round++) {
int hash_start, hash_end;
if ((round == 0 && has_lhs) || is_abbrev) {
// just use one hash
@ -935,9 +941,11 @@ theend:
/// for :cabbr mode is MODE_CMDLINE
/// ```
///
/// @param maptype MAPTYPE_MAP for |:map|
/// MAPTYPE_UNMAP for |:unmap|
/// MAPTYPE_NOREMAP for |:noremap|.
/// @param maptype MAPTYPE_MAP for |:map| or |:abbr|
/// MAPTYPE_UNMAP for |:unmap| or |:unabbr|
/// MAPTYPE_NOREMAP for |:noremap| or |:noreabbr|
/// MAPTYPE_UNMAP_LHS is like MAPTYPE_UNMAP, but doesn't try to match
/// with {rhs} if there is no match with {lhs}.
/// @param arg C-string containing the arguments of the map/abbrev
/// command, i.e. everything except the initial `:[X][nore]map`.
/// - Cannot be a read-only string; it will be modified.
@ -2348,7 +2356,7 @@ void f_mapset(typval_T *argvars, typval_T *rettv, EvalFuncData fptr)
MapArguments unmap_args = MAP_ARGUMENTS_INIT;
set_maparg_lhs_rhs(lhs, strlen(lhs), "", 0, LUA_NOREF, p_cpo, &unmap_args);
unmap_args.buffer = buffer;
buf_do_map(MAPTYPE_UNMAP, &unmap_args, mode, is_abbr, curbuf);
buf_do_map(MAPTYPE_UNMAP_LHS, &unmap_args, mode, is_abbr, curbuf);
xfree(unmap_args.rhs);
xfree(unmap_args.orig_rhs);

1
src/nvim/mapping.h
View File

@ -22,6 +22,7 @@ enum {
MAPTYPE_MAP = 0,
MAPTYPE_UNMAP = 1,
MAPTYPE_NOREMAP = 2,
MAPTYPE_UNMAP_LHS = 3,
};
/// Adjust chars in a language according to 'langmap' option.

19
test/old/testdir/test_map_functions.vim
View File

@ -527,6 +527,25 @@ func Test_map_restore_negative_sid()
call delete('Xresult')
endfunc
" Check that restoring a mapping doesn't remove a mapping whose {rhs} matches
" the restored mapping's {lhs}.
func Test_map_restore_with_rhs_match_lhs()
nnoremap <F2> <F3>
nnoremap <F3> <F4>
call assert_equal('<F3>', maparg('<F2>', 'n'))
call assert_equal('<F4>', maparg('<F3>', 'n'))
let d = maparg('<F3>', 'n', v:false, v:true)
nunmap <F3>
call assert_equal('<F3>', maparg('<F2>', 'n'))
call assert_equal('', maparg('<F3>', 'n'))
call mapset(d)
call assert_equal('<F3>', maparg('<F2>', 'n'))
call assert_equal('<F4>', maparg('<F3>', 'n'))
nunmap <F2>
nunmap <F3>
endfunc
func Test_maplist()
new
func s:ClearMappingsAbbreviations()