behdad at kemper.freedesktop.org
Sun Jun 29 12:01:23 PDT 2008
src/cairo.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
Author: Behdad Esfahbod <behdad at behdad.org>
Date: Sun Jun 29 15:00:10 2008 -0400
[show_text_glyphs] Allow clusters with zero text
As Adrian points out, PDF can handle it, and it doesn't harm allowing.
diff --git a/src/cairo.c b/src/cairo.c
index f55d78f..2dc1acc 100644
@@ -3236,11 +3236,16 @@ cairo_show_text_glyphs (cairo_t *cr,
int cluster_bytes = clusters[i].num_bytes;
int cluster_glyphs = clusters[i].num_glyphs;
- /* A cluster should cover at least one byte.
+ if (cluster_bytes < 0 || cluster_glyphs < 0)
+ goto BAD;
+ /* A cluster should cover at least one character or glyph.
* I can't see any use for a 0,0 cluster.
+ * I can't see an immediate use for a zero-text cluster
+ * right now either, but they don't harm.
* Zero-glyph clusters on the other hand are useful for
* things like U+200C ZERO WIDTH NON-JOINER */
- if (cluster_bytes < 1 || cluster_glyphs < 0)
+ if (cluster_bytes == 0 && cluster_glyphs == 0)
/* Since n_bytes and n_glyphs are unsigned, but the rest of
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