Tests: Add usage and tests for previous commit.
diff --git a/StandAlone/StandAlone.cpp b/StandAlone/StandAlone.cpp
index 1f7c5f2..1986a2f 100644
--- a/StandAlone/StandAlone.cpp
+++ b/StandAlone/StandAlone.cpp
@@ -1306,6 +1306,8 @@
" .geom for a geometry shader\n"
" .frag for a fragment shader\n"
" .comp for a compute shader\n"
+ " .glsl for .vert.glsl, .tesc.glsl, ..., .comp.glsl compound suffixes\n"
+ " .hlsl for .vert.hlsl, .tesc.hlsl, ..., .comp.hlsl compound suffixes\n"
"\n"
"Options:\n"
" -C cascading errors; risk crash from accumulation of error recoveries\n"