summaryrefslogtreecommitdiff
path: root/scheme/racket/geiser/user.rkt
diff options
context:
space:
mode:
authorJose Antonio Ortega Ruiz <jao@gnu.org>2013-04-15 04:08:08 +0200
committerJose Antonio Ortega Ruiz <jao@gnu.org>2013-04-15 04:08:08 +0200
commitc00f24907cf87589f4b28885507443d419385502 (patch)
treead53486c2f6654ec8263cf367138baba2be7261a /scheme/racket/geiser/user.rkt
parent82165389e02b4ff29bade2a2b34903142e3bc73a (diff)
downloadgeiser-guile-c00f24907cf87589f4b28885507443d419385502.tar.gz
geiser-guile-c00f24907cf87589f4b28885507443d419385502.tar.bz2
Racket: better help commands
For some reason that i don't fully understand, evaluating a function in the racket/base namespace first thing after loading errortrace breaks the help macro (!). This patches provides a workaround by actually invoking help first thing when Geiser starts, with alibi that it serves to preload the help index (in a separate thread). While i was at it, i improved the message printed in the minibuffer when no help is found.
Diffstat (limited to 'scheme/racket/geiser/user.rkt')
-rw-r--r--scheme/racket/geiser/user.rkt13
1 files changed, 11 insertions, 2 deletions
diff --git a/scheme/racket/geiser/user.rkt b/scheme/racket/geiser/user.rkt
index b7519b2..6aabe5e 100644
--- a/scheme/racket/geiser/user.rkt
+++ b/scheme/racket/geiser/user.rkt
@@ -9,14 +9,16 @@
;; Start date: Wed Mar 31, 2010 22:24
-#lang racket/base
+#lang racket
(provide init-geiser-repl run-geiser-server start-geiser)
(require (for-syntax racket/base)
mzlib/thread
racket/tcp
+ racket/help
geiser
+ geiser/autodoc
geiser/images
geiser/enter
geiser/eval
@@ -79,6 +81,7 @@
[(geiser-no-values) (datum->syntax #f (void))]
[(add-to-load-path) (add-to-load-path (read))]
[(set-image-cache) (image-cache (read))]
+ [(help) (get-help (read) (read))]
[(image-cache) (image-cache)]
[(gcd) (current-directory)]
[(cd) (current-directory (read))]
@@ -93,9 +96,14 @@
(define (geiser-prompt-read prompt)
(make-repl-reader (geiser-read prompt)))
+(define (preload-help)
+ (thread (lambda ()
+ (with-output-to-string (lambda () (help meh-i-dont-exist))))))
+
(define (init-geiser-repl)
(compile-enforce-module-constants #f)
(current-load/use-compiled geiser-loader)
+ (preload-help)
(current-prompt-read (geiser-prompt-read geiser-prompt))
(current-print maybe-print-image))
@@ -124,5 +132,6 @@
lsner)))))
(define (start-geiser (port 0) (hostname #f) (enforce-module-constants #f))
- (thread (lambda () (run-geiser-server port enforce-module-constants hostname)))
+ (thread (lambda ()
+ (run-geiser-server port enforce-module-constants hostname)))
(channel-get server-channel))