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vim-patch:9.0.0841: deletebufline() does not always return 1 on failure (#20980)

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Problem:    deletebufline() does not always return 1 on failure.
Solution:   Refactor the code to make it work more predictable. (closes vim/vim#11511)

7af3ee2b83
This commit is contained in:
zeertzjq
2022-11-07 07:03:31 +08:00
committed by GitHub
parent 08d53633d4
commit 3b3611a3d0
2 changed files with 39 additions and 21 deletions
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44
src/nvim/eval/funcs.c
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@@ -1510,6 +1510,7 @@ static void f_deletebufline(typval_T *argvars, typval_T *rettv, EvalFuncData fpt
buf_T *curbuf_save = NULL;
win_T *curwin_save = NULL;
// After this don't use "return", goto "cleanup"!
if (!is_curbuf) {
VIsual_active = false;
curbuf_save = curbuf;
@@ -1530,34 +1531,35 @@ static void f_deletebufline(typval_T *argvars, typval_T *rettv, EvalFuncData fpt
}
if (u_save(first - 1, last + 1) == FAIL) {
rettv->vval.v_number = 1; // FAIL
} else {
for (linenr_T lnum = first; lnum <= last; lnum++) {
ml_delete(first, true);
}
FOR_ALL_TAB_WINDOWS(tp, wp) {
if (wp->w_buffer == buf) {
if (wp->w_cursor.lnum > last) {
wp->w_cursor.lnum -= (linenr_T)count;
} else if (wp->w_cursor.lnum > first) {
wp->w_cursor.lnum = first;
}
if (wp->w_cursor.lnum > wp->w_buffer->b_ml.ml_line_count) {
wp->w_cursor.lnum = wp->w_buffer->b_ml.ml_line_count;
}
}
}
check_cursor_col();
deleted_lines_mark(first, count);
goto cleanup;
}
for (linenr_T lnum = first; lnum <= last; lnum++) {
ml_delete(first, true);
}
FOR_ALL_TAB_WINDOWS(tp, wp) {
if (wp->w_buffer == buf) {
if (wp->w_cursor.lnum > last) {
wp->w_cursor.lnum -= (linenr_T)count;
} else if (wp->w_cursor.lnum > first) {
wp->w_cursor.lnum = first;
}
if (wp->w_cursor.lnum > wp->w_buffer->b_ml.ml_line_count) {
wp->w_cursor.lnum = wp->w_buffer->b_ml.ml_line_count;
}
}
}
check_cursor_col();
deleted_lines_mark(first, count);
rettv->vval.v_number = 0; // OK
cleanup:
if (!is_curbuf) {
curbuf = curbuf_save;
curwin = curwin_save;
VIsual_active = save_VIsual_active;
}
rettv->vval.v_number = 0; // OK
}
/// "did_filetype()" function