ag ищет в ненужных файлах.

$ ag generate-tables .
src/rendering.lisp
4:(defun generate-tables (tables)

src/data-route.lisp
41:  (generate-tables (list *volt-ampere-characteristic*

src/rendering.lisp~
4:(defun generate-tables (tables)
$ cat .gitignore 
/doc/*
*~
/img/*
$ git ls-tree --full-tree -r HEAD|grep render
100644 blob 048234080d5e0c274721d71978feeef85b1c227c    src/rendering.lisp

IGNORING FILES
       By default, ag will ignore files matched  by  patterns
       in  .gitignore,  .hgignore,  or .agignore.