Command-line argument -c --> -f

README.md

@@ -49,7 +49,7 @@ RacketMQ has only one required configuration variable: you must tell
 the hub its primary ("canonical") *host name* and *port number*. These
 are used to build URLs for clients of the Hub to use.
 
-When the RacketMQ startup script is given a "`-c` *filename*" option,
+When the RacketMQ startup script is given a "`-f` *filename*" option,
 it loads configuration data from the named file. The option can be
 supplied more than once; all named files are imported.
 

racketmq/hub.rkt

@@ -1,6 +1,7 @@
 #lang syndicate/actor
 
 (require racket/cmdline)
+(require racket/port)
 (require racket/set)
 
 (require "private/util.rkt")
@@ -21,7 +22,11 @@
                       (assert (config (list 'canonical-host host (string->number port)))))]
 
               #:multi
-              [("-c" "--config") filename "Specify a configuration file to load"
+              [("-o" "--option") key vals "Specify a single configuration option"
+               (actor #:name (list 'config-option key vals)
+                      (assert (config (cons (string->symbol key)
+                                            (port->list read (open-input-string vals))))))]
+              [("-f" "--config-file") filename "Specify a configuration file to load"
                (spawn-configuration filename)])
 
 (actor #:name 'main

racketmq/run

@@ -6,4 +6,4 @@ set -e
 echo "Starting RacketMQ"
 exec 2>&1
 export PLTSTDERR="$PLTSTDERR debug@racketmq info@syndicate/drivers/web error"
-exec racket hub.rkt -c live-config.rktd
+exec racket hub.rkt -f live-config.rktd