From db8ab30c7587616edd99cb90bfdfa77fe4e702ac Mon Sep 17 00:00:00 2001 From: Jose Antonio Ortega Ruiz Date: Thu, 10 Sep 2015 04:22:10 +0200 Subject: Speeding up debugger check (addresses #64) Soooo, the long delay experienced when evaluating long string lists in Guile had nothing to do with the time took by emacs to read the response from the scheme process; that process is always a breeze, no matter or its format or number of newlines. The delay was provoked by an innocent looking function that scans the received string (which includes a prompt at the end as an EOT marker) to check whether Guile (or any other scheme) has just entered the debugger (that's done inside `geiser-con--connection-update-debugging`). For some reason, `string-match` on that kind of string using Guile's regexp for a debug prompt takes forever. Instead of trying to optimize the regular expression, i've just applied it to the *second* line of the received string, which is the one that contains the response's prompt. --- elisp/geiser-connection.el | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) (limited to 'elisp/geiser-connection.el') diff --git a/elisp/geiser-connection.el b/elisp/geiser-connection.el index 69dd6a9..e466cd3 100644 --- a/elisp/geiser-connection.el +++ b/elisp/geiser-connection.el @@ -156,7 +156,8 @@ (defun geiser-con--has-entered-debugger (con answer) (and (not (geiser-con--connection-is-debugging con)) - (geiser-con--connection-update-debugging con answer))) + (let ((p (car (last (split-string answer "\n" t))))) + (and p (geiser-con--connection-update-debugging con p))))) (defun geiser-con--connection-eot-p (con txt) (and txt @@ -201,15 +202,12 @@ `((error (key . geiser-debugger)) (output . ,answer)) (condition-case err - (let* ((start (string-match "((\\(?:result)?\\|error\\) " answer)) - (form (or (and start (car (read-from-string answer start))) - `((error (key . retort-syntax)) - (output . ,answer))))) - form) + (let ((start (string-match "((\\(?:result)?\\|error\\) " answer))) + (or (and start (car (read-from-string answer start))) + `((error (key . retort-syntax)) (output . ,answer)))) (error `((error (key . geiser-con-error)) (output . ,(format "%s\n(%s)" - answer - (error-message-string err))))))))) + answer (error-message-string err))))))))) (defun geiser-con--process-completed-request (req answer) (let ((cont (geiser-con--request-continuation req)) -- cgit v1.2.3