My Emacs configuration https://git.cjennings.net/dotemacs/atom?h=load-graph-classify-start 2026-05-10T18:44:40+00:00 2026-05-10T18:44:40+00:00 Craig Jennings c@cjennings.net 2026-05-10T18:44:40+00:00 urn:sha1:2b19eb175d0664908f76bf7cc8dcc1eb5c140ce1 `cj/dired-mark-all-visible-files' classified the current line as a directory via `(looking-at "^. d")' inline. Lift the classification into `cj/--dired-line-is-directory-p', a string predicate that takes a line and returns non-nil when it's a directory listing. The wrapper still walks the dired buffer line by line and calls `dired-mark' -- that iteration is dired-coupled and stays untested -- but the format-aware predicate is now isolated and verified. Six Normal/Boundary tests cover unmarked directories, marked directories (`*' prefix), regular files (`-' instead of `d'), symlinks (`l'), empty lines, and dired header lines (` /path:' and ` total N').