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fixed a somewhat awkward error message that made 'system' look awkward

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(manually adapted)

(cherry picked from commit f2b9cdaadd)
This commit is contained in:
Matthias Felleisen 2012-07-20 10:37:37 -04:00 committed by Ryan Culpepper
parent fd7c2ad407
commit 913f6365f9
1 changed files with 7 additions and 4 deletions
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9
collects/mzlib/process.rkt
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@ -78,17 +78,20 @@
(raise-argument-error
who
(string-append "(or/c path-string?\n"
" (and/c bytes? (lambda (bs) (not (memv 0 (bytes->list bs))))))")
" (and/c bytes? bytes-no-nuls?))")
s)))])
args)
;; MF: fxing a somewhat awkward looking error message. Comment for Matthew in case he wants to improve on it.
(provide string-no-nuls? bytes-no-nuls?)
(define (check-command who str)
(unless (or (string-no-nuls? str)
(bytes-no-nuls? str))
(raise-argument-error
who
(string-append "(or/c (and/c string? (lambda (s) (not (memv #\\nul (string->list s)))))\n"
" (and/c bytes? (lambda (bs) (not (memv 0 (bytes->list bs))))))")
(string-append "(or/c (and/c string? string-no-nuls?)\n"
" (and/c bytes? bytes-no-nuls?))")
str)))
;; Old-style functions: ----------------------------------------