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misc improvements around read-language (uses and docs)

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- make a logger for drracket-related #lang problems
- change read-language's docs to indicate that it can return #f
- adjust a bunch of calls to read-language for the case that it returns #f
  with the goal of making that be the same as a get-info function that
  always returns the given default
- mention `read-language` in the guide section entitled
 "Source-Handling Configuration"

original commit: 8429f3e9d6db6a790335f026a93e7850a89bb1fa
This commit is contained in:
Robby Findler 2014-07-22 03:14:12 -05:00
parent ed3c280793
commit 35046e9295
1 changed files with 1 additions and 1 deletions
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pkgs/typed-racket-pkgs/typed-racket-lib/typed-racket/base-env/base-env.rkt
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@ -1978,7 +1978,7 @@
[read-syntax (->opt [Univ -Input-Port] (Un (-Syntax Univ) (-val eof)))]
[read/recursive (->opt [-Input-Port (-opt -Char) (-opt -Read-Table) Univ] Univ)]
[read-syntax/recursive (->opt [Univ -Input-Port (-opt -Char) (-opt -Read-Table) Univ] Univ)]
[read-language (->opt [-Input-Port (-> ManyUniv)] (-> Univ Univ ManyUniv))]
[read-language (->opt [-Input-Port (-> ManyUniv)] (-opt (-> Univ Univ ManyUniv)))]
[read-case-sensitive (-Param Univ B)]
[read-square-bracket-as-paren (-Param Univ B)]