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Make U+FE0F VARIATION SELECTOR-16 change the width from 1 to 2. GitHub

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issue 3409.
This commit is contained in:
nicm
2022-12-16 08:19:58 +00:00
parent 3b3f42053a
commit 8bd17bff49
2 changed files with 16 additions and 9 deletions
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14
screen-write.c
View File

@@ -1820,7 +1820,7 @@ screen_write_cell(struct screen_write_ctx *ctx, const struct grid_cell *gc)
struct grid_cell tmp_gc, now_gc;
struct tty_ctx ttyctx;
u_int sx = screen_size_x(s), sy = screen_size_y(s);
u_int width = gc->data.width, xx, last, cx, cy;
u_int width = gc->data.width, xx, last, cy;
int selected, skip = 1;
/* Ignore padding cells. */
@@ -1853,12 +1853,12 @@ screen_write_cell(struct screen_write_ctx *ctx, const struct grid_cell *gc)
ctx->flags &= ~SCREEN_WRITE_ZWJ;
screen_write_collect_flush(ctx, 0, __func__);
if ((gc = screen_write_combine(ctx, ud, &xx)) != NULL) {
cx = s->cx; cy = s->cy;
cy = s->cy;
screen_write_set_cursor(ctx, xx, s->cy);
screen_write_initctx(ctx, &ttyctx, 0);
ttyctx.cell = gc;
tty_write(tty_cmd_cell, &ttyctx);
s->cx = cx; s->cy = cy;
s->cx = xx + 1 + gc->data.width; s->cy = cy;
}
return;
}
@@ -2016,6 +2016,14 @@ screen_write_combine(struct screen_write_ctx *ctx, const struct utf8_data *ud,
memcpy(gc.data.data + gc.data.size, ud->data, ud->size);
gc.data.size += ud->size;
/* If this is U+FE0F VARIATION SELECTOR-16, force the width to 2. */
if (gc.data.width == 1 &&
ud->size == 3 &&
memcmp(ud->data, "\357\270\217", 3) == 0) {
grid_view_set_padding(gd, (*xx) + 1, s->cy);
gc.data.width = 2;
}
/* Set the new cell. */
grid_view_set_cell(gd, *xx, s->cy, &gc);

9
utf8.c
View File

@@ -227,12 +227,11 @@ utf8_width(struct utf8_data *ud, int *width)
return (UTF8_ERROR);
}
*width = wcwidth(wc);
if (*width < 0 || *width > 0xff) {
log_debug("UTF-8 %.*s, wcwidth() %d", (int)ud->size, ud->data,
*width);
return (UTF8_ERROR);
}
log_debug("UTF-8 %.*s %#x, wcwidth() %d", (int)ud->size, ud->data,
(u_int)wc, *width);
if (*width >= 0 && *width <= 0xff)
return (UTF8_DONE);
return (UTF8_ERROR);
}
/*