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| author | Jose Antonio Ortega Ruiz <jao@gnu.org> | 2013-04-15 04:08:08 +0200 |
|---|---|---|
| committer | Jose Antonio Ortega Ruiz <jao@gnu.org> | 2013-04-15 04:08:08 +0200 |
| commit | c00f24907cf87589f4b28885507443d419385502 (patch) | |
| tree | ad53486c2f6654ec8263cf367138baba2be7261a /scheme/racket/geiser/user.rkt | |
| parent | 82165389e02b4ff29bade2a2b34903142e3bc73a (diff) | |
| download | geiser-chez-c00f24907cf87589f4b28885507443d419385502.tar.gz geiser-chez-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.rkt | 13 |
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)) |