[subset] Note --no-layout-closure is only for GSUB.
diff --git a/src/hb-subset.h b/src/hb-subset.h
index d64ea7b..24a5621 100644
--- a/src/hb-subset.h
+++ b/src/hb-subset.h
@@ -72,7 +72,7 @@
* @HB_SUBSET_FLAGS_NO_PRUNE_UNICODE_RANGES: If set then the unicode ranges in
* OS/2 will not be recalculated.
* @HB_SUBSET_FLAGS_NO_LAYOUT_CLOSURE: If set don't perform glyph closure on layout
- * tables (GSUB, GPOS, GDEF).
+ * substitution rules (GSUB).
*
* List of boolean properties that can be configured on the subset input.
*
diff --git a/util/hb-subset.cc b/util/hb-subset.cc
index 1c2485d..cdab3ef 100644
--- a/util/hb-subset.cc
+++ b/util/hb-subset.cc
@@ -941,7 +941,7 @@
{"set-overlaps-flag", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, (gpointer) &set_flag<HB_SUBSET_FLAGS_SET_OVERLAPS_FLAG>, "Set the overlaps flag on each glyph.", nullptr},
{"notdef-outline", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, (gpointer) &set_flag<HB_SUBSET_FLAGS_NOTDEF_OUTLINE>, "Keep the outline of \'.notdef\' glyph", nullptr},
{"no-prune-unicode-ranges", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, (gpointer) &set_flag<HB_SUBSET_FLAGS_NO_PRUNE_UNICODE_RANGES>, "Don't change the 'OS/2 ulUnicodeRange*' bits.", nullptr},
- {"no-layout-closure", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, (gpointer) &set_flag<HB_SUBSET_FLAGS_NO_LAYOUT_CLOSURE>, "Don't perform glyph closure for layout tables (GSUB, GPOS, GDEF).", nullptr},
+ {"no-layout-closure", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, (gpointer) &set_flag<HB_SUBSET_FLAGS_NO_LAYOUT_CLOSURE>, "Don't perform glyph closure for layout substitution (GSUB).", nullptr},
{"glyph-names", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, (gpointer) &set_flag<HB_SUBSET_FLAGS_GLYPH_NAMES>, "Keep PS glyph names in TT-flavored fonts. ", nullptr},
{"passthrough-tables", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, (gpointer) &set_flag<HB_SUBSET_FLAGS_PASSTHROUGH_UNRECOGNIZED>, "Do not drop tables that the tool does not know how to subset.", nullptr},
{"preprocess-face", 0, G_OPTION_FLAG_HIDDEN, G_OPTION_ARG_NONE, &this->preprocess,
