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vim-patch:9.0.0691: lalloc(0) error in listchars test

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Problem:    lalloc(0) error in listchars test.
Solution:   Skip generating text for tab if tab_len is zero.

2b7b4f7670

Co-authored-by: Bram Moolenaar <Bram@vim.org>
This commit is contained in:
zeertzjq 2023-03-03 07:38:13 +08:00
parent a974d1511e
commit c2e602b9d0
1 changed files with 36 additions and 34 deletions
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70
src/nvim/drawline.c
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@ -2103,43 +2103,45 @@ int win_line(win_T *wp, linenr_T lnum, int startrow, int endrow, bool nochange,
tab_len += n_extra - tab_len;
}
// If n_extra > 0, it gives the number of chars
// to use for a tab, else we need to calculate the width
// for a tab.
int tab2_len = utf_char2len(wp->w_p_lcs_chars.tab2);
int len = tab_len * tab2_len;
if (wp->w_p_lcs_chars.tab3) {
len += utf_char2len(wp->w_p_lcs_chars.tab3) - tab2_len;
}
if (n_extra > 0) {
len += n_extra - tab_len;
}
c = wp->w_p_lcs_chars.tab1;
p = xmalloc((size_t)len + 1);
memset(p, ' ', (size_t)len);
p[len] = NUL;
xfree(p_extra_free);
p_extra_free = p;
for (int i = 0; i < tab_len; i++) {
if (*p == NUL) {
tab_len = i;
break;
if (tab_len > 0) {
// If n_extra > 0, it gives the number of chars
// to use for a tab, else we need to calculate the
// width for a tab.
int tab2_len = utf_char2len(wp->w_p_lcs_chars.tab2);
int len = tab_len * tab2_len;
if (wp->w_p_lcs_chars.tab3) {
len += utf_char2len(wp->w_p_lcs_chars.tab3) - tab2_len;
}
int lcs = wp->w_p_lcs_chars.tab2;
// if tab3 is given, use it for the last char
if (wp->w_p_lcs_chars.tab3 && i == tab_len - 1) {
lcs = wp->w_p_lcs_chars.tab3;
if (n_extra > 0) {
len += n_extra - tab_len;
}
p += utf_char2bytes(lcs, p);
n_extra += utf_char2len(lcs) - (saved_nextra > 0 ? 1 : 0);
}
p_extra = p_extra_free;
c = wp->w_p_lcs_chars.tab1;
p = xmalloc((size_t)len + 1);
memset(p, ' ', (size_t)len);
p[len] = NUL;
xfree(p_extra_free);
p_extra_free = p;
for (int i = 0; i < tab_len; i++) {
if (*p == NUL) {
tab_len = i;
break;
}
int lcs = wp->w_p_lcs_chars.tab2;
// n_extra will be increased by FIX_FOX_BOGUSCOLS
// macro below, so need to adjust for that here
if (vcol_off > 0) {
n_extra -= vcol_off;
// if tab3 is given, use it for the last char
if (wp->w_p_lcs_chars.tab3 && i == tab_len - 1) {
lcs = wp->w_p_lcs_chars.tab3;
}
p += utf_char2bytes(lcs, p);
n_extra += utf_char2len(lcs) - (saved_nextra > 0 ? 1 : 0);
}
p_extra = p_extra_free;
// n_extra will be increased by FIX_FOX_BOGUSCOLS
// macro below, so need to adjust for that here
if (vcol_off > 0) {
n_extra -= vcol_off;
}
}
}