inserted by the compilation filter function, when calling
compilation-filter-hook.
-*** `compilation-error-screen-columns' is obeyed in the editing buffer.
-So programming language modes can set it, whereas previously only the value
-in the *compilation* buffer was used.
+*** `compilation-error-screen-columns' and `compilation-first-column'
+are obeyed in the editing buffer. So programming language modes can
+set them, whereas previously only the value in the *compilation* buffer
+was used.
** Customize