checkpatch uses a lot of s/// and s///g heuristics to cleanup
code-chunks, before inspecting for problems with more heurisitics.

add a drx_print("reason") helper, for use like:

  s/$patt//;	-> s/$patt/drx_print("does this")/e;
  s/$patt//g;	-> s/$patt/drx_print("does that")/ge;

(note the 'e' modifier)

To activate, pass --debug rx=1 or --debug rx="this"

Jim Cromie (2):
  checkpatch: add --debug rx=1|foo option and drx_print() helper
  checkpatch: 3 use-cases for --debug rx=1 option

 scripts/checkpatch.pl | 48 ++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 45 insertions(+), 3 deletions(-)

-- 
2.51.0