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Allow codepoint-widths to accept ranges, from san65384 at gmail dot com

Browse Source 
in GitHub issue 4930.
This commit is contained in:
nicm
2026-03-18 08:38:54 +00:00
parent fd62f419ac
commit f516f8a1d4
2 changed files with 55 additions and 20 deletions
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5
tmux.1
View File

@@ -4239,9 +4239,10 @@ An array option allowing widths of Unicode codepoints to be overridden.
Note the new width applies to all clients.
Each entry is of the form
.Em codepoint=width ,
where codepoint may be a UTF-8 character or an identifier of the form
where codepoint may be a UTF-8 character, an identifier of the form
.Ql U+number
where the number is a hexadecimal number.
where the number is a hexadecimal number, or a range of the form
.Ql U+number-U+number .
.It Ic copy-command Ar shell-command
Give the command to pipe to if the
.Ic copy-pipe

70
utf8.c
View File

@@ -291,16 +291,37 @@ utf8_find_in_width_cache(wchar_t wc)
return RB_FIND(utf8_width_cache, &utf8_width_cache, &uw);
}
/* Add to width cache. */
static void
utf8_insert_width_cache(wchar_t wc, u_int width)
{
struct utf8_width_item *uw, *old;
log_debug("Unicode width cache: %08X=%u", (u_int)wc, width);
uw = xcalloc(1, sizeof *uw);
uw->wc = wc;
uw->width = width;
uw->allocated = 1;
old = RB_INSERT(utf8_width_cache, &utf8_width_cache, uw);
if (old != NULL) {
RB_REMOVE(utf8_width_cache, &utf8_width_cache, old);
if (old->allocated)
free(old);
RB_INSERT(utf8_width_cache, &utf8_width_cache, uw);
}
}
/* Parse a single codepoint option. */
static void
utf8_add_to_width_cache(const char *s)
{
struct utf8_width_item *uw, *old;
char *copy, *cp, *endptr;
u_int width;
const char *errstr;
struct utf8_data *ud;
wchar_t wc;
wchar_t wc, wc_start, wc_end;
unsigned long long n;
copy = xstrdup(s);
@@ -320,14 +341,40 @@ utf8_add_to_width_cache(const char *s)
errno = 0;
n = strtoull(copy + 2, &endptr, 16);
if (copy[2] == '\0' ||
*endptr != '\0' ||
n == 0 ||
n > WCHAR_MAX ||
(errno == ERANGE && n == ULLONG_MAX)) {
free(copy);
return;
}
wc = n;
wc_start = n;
if (*endptr == '-') {
endptr++;
if (strncmp(endptr, "U+", 2) != 0) {
free(copy);
return;
}
errno = 0;
n = strtoull(endptr + 2, &endptr, 16);
if (*endptr != '\0' ||
n == 0 ||
n > WCHAR_MAX ||
(errno == ERANGE && n == ULLONG_MAX) ||
(wchar_t)n < wc_start) {
free(copy);
return;
}
wc_end = n;
} else {
if (*endptr != '\0') {
free(copy);
return;
}
wc_end = wc_start;
}
for (wc = wc_start; wc <= wc_end; wc++)
utf8_insert_width_cache(wc, width);
} else {
utf8_no_width = 1;
ud = utf8_fromcstr(copy);
@@ -347,21 +394,8 @@ utf8_add_to_width_cache(const char *s)
return;
}
free(ud);
}
log_debug("Unicode width cache: %08X=%u", (u_int)wc, width);
uw = xcalloc(1, sizeof *uw);
uw->wc = wc;
uw->width = width;
uw->allocated = 1;
old = RB_INSERT(utf8_width_cache, &utf8_width_cache, uw);
if (old != NULL) {
RB_REMOVE(utf8_width_cache, &utf8_width_cache, old);
if (old->allocated)
free(old);
RB_INSERT(utf8_width_cache, &utf8_width_cache, uw);
utf8_insert_width_cache(wc, width);
}
free(copy);