My Emacs configuration https://git.cjennings.net/dotemacs/atom?h=main 2026-05-14T08:43:46+00:00 2026-05-14T08:43:46+00:00 Craig Jennings c@cjennings.net 2026-05-14T08:43:46+00:00 urn:sha1:f6cfaee02412944e281c7ec4c6b20512b3e45708 Sibling tests in `test-external-open-lib-*.el` covered the pure helpers (`cj/external-open-command`, `cj/external-open-launcher-p`). This batch covers the user-facing wrappers: - `cj/xdg-open`: posix path triggers `call-process` with the open program; errors when no file is associated; errors when no command resolves on the host. - `cj/open-this-file-with`: errors outside a file-visiting buffer; posix path spawns a detached process via `call-process-shell-command` with `nohup ... >/dev/null 2>&1 &`. - `cj/find-file-auto`: routes a `.mp4` (in `default-open-extensions`) to `cj/xdg-open`, passes `.txt` through to the original `find-file`, and falls through cleanly for a nil filename argument. Host predicates, call-process, and the underlying `cj/xdg-open` are stubbed throughout.