Categorize U+0C80 as Consonant_Placeholder

src/hb-ot-shape-complex-indic.cc

@@ -223,6 +223,7 @@ set_indic_properties (hb_glyph_info_t &info)
   else if (unlikely (u == 0x0AFBu)) cat = OT_N; /* https://github.com/harfbuzz/harfbuzz/issues/552 */
 
   else if (unlikely (u == 0x0980u)) cat = OT_PLACEHOLDER; /* https://github.com/harfbuzz/harfbuzz/issues/538 */
+  else if (unlikely (u == 0x0C80u)) cat = OT_PLACEHOLDER; /* https://github.com/harfbuzz/harfbuzz/pull/623 */
   else if (unlikely (u == 0x17C6u)) cat = OT_N; /* Khmer Bindu doesn't like to be repositioned. */
   else if (unlikely (hb_in_range<hb_codepoint_t> (u, 0x2010u, 0x2011u)))
 				    cat = OT_PLACEHOLDER;

test/shaping/tests/indic-syllable.tests

@@ -5,3 +5,4 @@ fonts/sha1sum/87f85d17d26f1fe9ad28d7365101958edaefb967.ttf:--font-funcs=ot:U+098
 fonts/sha1sum/85fe0be440c64ac77699e21c2f1bd933a919167e.ttf::U+0A15,U+0A51,U+0A47:[kaguru=0+1273|udaatguru=0@75,0+0|eematraguru=0@-40,0+0]
 fonts/sha1sum/1735326da89f0818cd8c51a0600e9789812c0f94.ttf::U+0A51:[uni25CC=0+1044|udaatguru=0+0]
 fonts/sha1sum/1735326da89f0818cd8c51a0600e9789812c0f94.ttf::U+25CC,U+0A51:[uni25CC=0+1044|udaatguru=0+0]
+fonts/sha1sum/81c368a33816fb20e9f647e8f24e2180f4720263.ttf:--no-glyph-names:U+0C80,U+0C82:[1=0+502|2=0+502]