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-rw-r--r--modules/basic/basic-fc.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/modules/basic/basic-fc.c b/modules/basic/basic-fc.c
index 42832470..e1e7aa1c 100644
--- a/modules/basic/basic-fc.c
+++ b/modules/basic/basic-fc.c
@@ -293,7 +293,14 @@ basic_engine_shape (PangoEngineShape *engine G_GNUC_UNUSED,
for (i = 0; i < num_glyphs; i++)
{
glyphs->glyphs[i].glyph = hb_glyph->codepoint;
- glyphs->log_clusters[i] = hb_glyph->cluster;
+ if (i && glyphs->log_clusters[i-1] != hb_glyph->cluster) {
+ GUnicodeType t = g_unichar_type (g_utf8_get_char (text + hb_glyph->cluster));
+ if ((1<<t) & ((1<<G_UNICODE_COMBINING_MARK)|(1<<G_UNICODE_ENCLOSING_MARK)|(1<<G_UNICODE_NON_SPACING_MARK)))
+ glyphs->log_clusters[i] = last_cluster;
+ else
+ glyphs->log_clusters[i] = hb_glyph->cluster;
+ } else
+ glyphs->log_clusters[i] = hb_glyph->cluster;
glyphs->glyphs[i].attr.is_cluster_start = glyphs->log_clusters[i] != last_cluster;
last_cluster = glyphs->log_clusters[i];