On Tuesday, May 02, 2006 11:13 PM C Y wrote: > > Does anybody know of a way to check for, say, "axiom" in the > PATH on a particular system from Emacs? Trying to run something > via comint seems to result in an error which stops everything. > I'm trying to first run "axiom" if it's available (it turns out > graphics do work when run from the Emacs buffer) and if it isn't > available fall back to "AXIOMsys". I know I could do some hackery > with running "which axiom" on Linux but I'm hoping for something > more straightforward and portable. > I'm no emacs hacker, but it looks like some code in emacs esh-ext might do what you want. See:
http://www.cgl.uwaterloo.ca/~mmwasile/data/elisp/eshell-2.4.2/esh-ext.el ... (defun eshell-search-path (name) "Search the environment path for NAME." (if (file-name-absolute-p name) name (let ((list (parse-colon-path (getenv "PATH"))) suffixes n1 n2 file) (while list (setq n1 (concat (car list) name)) (setq suffixes eshell-binary-suffixes) (while suffixes (setq n2 (concat n1 (car suffixes))) (if (and (or (file-executable-p n2) (and eshell-force-execution (file-readable-p n2))) (not (file-directory-p n2))) (setq file n2 suffixes nil list nil)) (setq suffixes (cdr suffixes))) (setq list (cdr list))) file))) ... Regards, Bill Page. _______________________________________________ Axiom-developer mailing list [email protected] http://lists.nongnu.org/mailman/listinfo/axiom-developer
