commit https://github.com/vim/vim/commit/7c29f387819b5817b003d2ba73e2b5cf3cb3d0dd Author: Bram Moolenaar <Bram@vim.org> Date: Fri Feb 12 19:08:15 2016 +0100 patch 7.4.1305 Problem: "\%1l^#.*" does not match on a line starting with "#". Solution: Do not clear the start-of-line flag. (Christian Brabandt)

--- a/src/testdir/test36.in
+++ b/src/testdir/test36.in
@@ -98,6 +98,9 @@ p:s/\%#=2\U//g
 p:s/\%#=0[^A-Z]//g
 p:s/\%#=1[^A-Z]//g
 p:s/\%#=2[^A-Z]//g
+p:s/\%#=0\%204l^\t...//g
+p:s/\%#=1\%205l^\t...//g
+p:s/\%#=2\%206l^\t...//g
 :/^start-here/+1,$wq! test.out
 ENDTEST