raco test: doc and help tweaks

* Clarify shell context for `++args` note on quotes

 * Add `history` notes

 * Make the help output fit in 80 columns

 * Bump "compiler-lib" version

pkgs/compiler-lib/compiler/commands/test.rkt

@@ -1006,14 +1006,14 @@
     (set! default-mode 'process))]
  #:multi
  [("--submodule" "-s") name
-  "Runs submodule <name>\n    (defaults to running just the `test' submodule)"
+  "Runs submodule <name>\n    (defaults to running just the `test` submodule)"
   (let ([n (string->symbol name)])
     (set! submodules (cons n submodules)))]
  [("++arg") arg
-  "Adds <arg> to `current-command-line-arguments`"
+  "Adds <arg> to the end of `current-command-line-arguments`"
   (set! extra-command-line-args (cons arg extra-command-line-args))]
-  [("++args") args
-  "Adds <args> (whitespace-separated values) to `current-command-line-arguments`"
+ [("++args") args
+  "Adds each whitespace-delimited in <args> like ++arg"
   (set! extra-command-line-args
         (append (reverse (string-split args)) extra-command-line-args))]
  #:once-any
@@ -1061,12 +1061,12 @@
   (set! check-stderr? #t)]
  #:multi
  [("++ignore-stderr") pattern
-  "Ignore standard error output if it matches #px\"<pattern>\""
+  "Ignore stderr output that matches #px\"<pattern>\""
   (set! ignore-stderr-patterns
         (cons (pregexp pattern) ignore-stderr-patterns))]
  #:once-each
  [("--quiet" "-q")
-  "Suppress `raco test: ...' message"
+  "Suppress `raco test: ...` message"
   (set! quiet? #t)]
  [("--heartbeat")
   "Periodically report that a test is still running"

pkgs/compiler-lib/info.rkt

@@ -13,4 +13,4 @@
 
 (define pkg-authors '(mflatt))
 
-(define version "1.5")
+(define version "1.6")

pkgs/racket-doc/scribblings/raco/test.scrbl

@@ -164,23 +164,26 @@ The @exec{raco test} command accepts several flags:
        counts based on the log.}
 
  @item{@DPFlag{arg} @nonterm{argument}
-       --- Forwards @nonterm{argument} to the invoked test module,
+       --- Adds @nonterm{argument} to the list of arguments to the invoked test module,
        so that the invoked module sees @nonterm{argument} in its
        @racket[current-command-line-arguments]. These arguments are
        combined with any arguments specified in @filepath{info.rkt}
        by @racket[test-command-line-arguments].}
 
  @item{@DPFlag{args} @nonterm{arguments}
-        --- The same as @DPFlag{arg}, except that {arguments} is treated
-        as a whitespace-separated list of arguments to forward. To specify
-        multiple arguments using this flag, @nonterm{arguments} must be
+        --- The same as @DPFlag{arg}, but @nonterm{arguments} is treated
+        as a whitespace-delimited list of arguments to add. To specify
+        multiple arguments using this flag within a typical shell,
+        @nonterm{arguments} must be
         enclosed in quotation marks.
  }
 ]
 
 @history[#:changed "1.1" @elem{Added @DFlag{heartbeat}.}
          #:changed "1.4" @elem{Changed recognition of module suffixes to use @racket[get-module-suffixes],
-                               which implies recognizing @filepath{.ss} and @filepath{.rkt}.}]
+                               which implies recognizing @filepath{.ss} and @filepath{.rkt}.}
+         #:changed "1.5" @elem{Added @DPFlag{ignore-stderr}.}
+         #:changed "1.6" @elem{Added @DPFlag{arg} and @DPFlag{args}.}]
 
 @section[#:tag "test-config"]{Test Configuration by Submodule}