in text mode, don't do "The Racket Language"-specific things

closes PR 14590

pkgs/drracket-pkgs/drracket-plugin-lib/drracket/private/drsig.rkt

@@ -46,7 +46,11 @@
 (define-signature drracket:modes^ extends drracket:modes-cm^
   (add-mode
    get-modes
-   (struct mode (name surrogate repl-submit matches-language) 
+   (struct mode (name
+                 surrogate
+                 repl-submit
+                 matches-language
+                 intended-to-edit-programs?)
      #:omit-constructor)))
 (define-signature drracket:modes/int^ extends drracket:modes^
   (add-initial-modes))

pkgs/drracket-pkgs/drracket/drracket/private/local-member-names.rkt

@@ -57,7 +57,8 @@
 ;; mode changing definitions text mixin
 (define-local-member-name 
   maybe-change-language
-  change-mode-to-match)
+  change-mode-to-match
+  get-current-mode)
 
 
 (provide (struct-out drracket:language-configuration:language-settings))
@@ -80,4 +81,4 @@
   
 
 (provide (struct-out drracket:modes:mode))
-(struct drracket:modes:mode (name surrogate repl-submit matches-language))
+(struct drracket:modes:mode (name surrogate repl-submit matches-language intended-to-edit-programs?))

pkgs/drracket-pkgs/drracket/drracket/private/modes.rkt

@@ -15,18 +15,21 @@
 (define mode-surrogate drracket:modes:mode-surrogate)
 (define mode-repl-submit drracket:modes:mode-repl-submit)
 (define mode-matches-language drracket:modes:mode-matches-language)
+(define mode-intended-to-edit-programs? drracket:modes:mode-intended-to-edit-programs?)
 (define struct:mode struct:drracket:modes:mode)
 
-
 (define modes (list))
 
 (define (get-modes) modes)
 
-(define (add-mode name surrogate repl-submit matches-language)
-  (let ([new-mode (drracket:modes:mode name 
+(define (add-mode name surrogate repl-submit matches-language
+                  #:intended-to-edit-programs? [intended-to-edit-programs? #t])
+  (define new-mode
+    (drracket:modes:mode name 
                          surrogate
                          repl-submit
-                                       matches-language)])
+                         matches-language
+                         intended-to-edit-programs?))
   (for ([old-mode (in-list modes)])
     (when (equal? (mode-name old-mode) name)
       (raise-argument-error
@@ -35,7 +38,7 @@
        0
        name surrogate repl-submit matches-language)))
   (set! modes (cons new-mode modes))
-    new-mode))
+  new-mode)
 
 (define (not-a-language-language? l)
   (and (not (null? l))
@@ -66,4 +69,5 @@
    (λ (l) 
      (and l
           (or (not-a-language-language? l)
-              (ormap (λ (x) (regexp-match #rx"Algol" x)) l))))))
+              (ormap (λ (x) (regexp-match #rx"Algol" x)) l))))
+   #:intended-to-edit-programs? #f))

pkgs/drracket-pkgs/drracket/drracket/private/module-language.rkt

@@ -2537,9 +2537,12 @@
   
   ;; in-module-language : tab -> module-language-settings or #f
   (define (tab-in-module-language tab)
-    (define settings (send (send tab get-defs) get-next-settings))
+    (define defs (send tab get-defs))
+    (define settings (send defs get-next-settings))
+    (define mode (send defs get-current-mode))
     (and (is-a? (drracket:language-configuration:language-settings-language settings)
                 module-language<%>)
+         (drracket:modes:mode-intended-to-edit-programs? mode)
          (drracket:language-configuration:language-settings-settings settings)))
   
   (define (initialize-prefs-panel)
@@ -2635,6 +2638,7 @@
       
       (define current-mode #f)
       
+      (define/public (get-current-mode) current-mode)
       (define/public (set-current-mode mode)
         (set! current-mode mode)
         (define surrogate (drracket:modes:mode-surrogate mode))

pkgs/drracket-pkgs/drracket/drracket/tool-lib.rkt

@@ -105,7 +105,7 @@ all of the names in the tools library, for use defining keybindings
  (language:simple-settings #t case-sensitive printing-style
                            fraction-style show-sharing
                            insert-newlines annotations)
- (modes:mode #t name surrogate repl-submit matches-language))
+ (modes:mode #t name surrogate repl-submit matches-language intended-to-edit-programs?))
  
 (provide-signature-elements drracket:tool-cm^) ;; provide all of the classes & interfaces
 (provide-signature-elements drscheme:tool-cm^) ;; provide the classes & interfaces w/ drscheme: prefix
@@ -1066,12 +1066,14 @@ all of the names in the tools library, for use defining keybindings
  
  (proc-doc/names
   drracket:modes:add-mode
-  (-> string?
+  (->* (string?
         (or/c #f (is-a?/c mode:surrogate-text<%>))
         (-> (is-a?/c drracket:rep:text%) number? boolean?)
-      (-> (or/c #f (listof string?)) boolean?)
+        (-> (or/c #f (listof string?)) boolean?))
+       (#:intended-to-edit-programs? boolean?)
        drracket:modes:mode?)
-  (name surrogate repl-submit matches-language)
+  ((name surrogate repl-submit matches-language)
+   ([intended-to-edit-programs? #t]))
   @{Adds a mode to DrRacket. Returns a mode value
     that identifies the mode.
     
@@ -1103,22 +1105,35 @@ all of the names in the tools library, for use defining keybindings
     that correspond to the names of the language in the
     language dialog.
     
+    The @racket[intended-to-edit-programs?] boolean indicates
+    if this mode is intended to be for editing programs 
+    (as opposed to some other kind of file content). If it is
+    @racket[#f], online expansion is disabled and DrRacket
+    won't look for @tt{(module} at the front of the buffer
+    to try to guess the intended filename.
+    
     Modes are tested in the opposite order that they are
     added. That is, the last mode to be added gets tested
     first when the filename changes or when the language
     changes.
     
     See also
-    @racket[drracket:modes:get-modes].})
+    @racket[drracket:modes:get-modes].
+    
+    @history[#:changed "1.1" @list{Added the @racket[intended-to-edit-programs?] argument.}]
+    })
  
  (struct-doc 
   drracket:modes:mode
   ([name string?]
    [surrogate (or/c #f (is-a?/c mode:surrogate-text<%>))]
    [repl-submit (-> (is-a?/c drracket:rep:text%) number? boolean?)]
-   [matches-language (-> (or/c #f (listof string?)) boolean?)])
+   [matches-language (-> (or/c #f (listof string?)) boolean?)]
+   [intended-to-edit-programs? boolean?])
   #:omit-constructor
-  @{See @racket[drracket:modes:add-mode] for details on modes.})
+  @{See @racket[drracket:modes:add-mode] for details on modes.
+        
+    @history[#:changed "1.1" @list{Added the @racket[intended-to-edit-programs?] field.}]})
  
  (thing-doc
   drracket:modes:struct:mode

pkgs/drracket-pkgs/drracket/info.rkt

@@ -57,3 +57,5 @@
 (define pkg-desc "The DrRacket programming environment")
 
 (define pkg-authors '(robby))
+
+(define version "1.1")