cleanup for raw txt (grammar check)

thesis/drop-images.lua

@@ -0,0 +1,11 @@
+-- drop-images.lua
+-- Replaces all images (figures, graphics) with a short placeholder.
+function Image(el) return pandoc.Str("[image omitted]") end
+
+-- For LaTeX figures that are still raw
+function RawBlock(el)
+    if el.format == "tex" and el.text:match("\\begin%s*{%s*figure%s*}") then
+        return pandoc.Plain({pandoc.Str("[figure omitted]")})
+    end
+end
+