elisp: customizable patience amount on racket startup

In this little notebook i'm using, racket takes its time to start.  In
fact, it can take more the previously slotted 10 seconds.  Hence the
new geiser-repl-startup-time variable.

2 files changed, 23 insertions, 1 deletions

diff --git a/doc/repl.texi b/doc/repl.texi
index bef0f3f..d1e1f6b 100644
--- a/doc/repl.texi
+++ b/doc/repl.texi
@@ -329,6 +329,22 @@ loads a file specified via the @code{-l} flag.  If what you want is just
 loading @file{~/.guile}, leave @code{geiser-guile-init-file} alone and
 set @code{geiser-guile-load-init-file-p} to @code{t} instead.
 
+@subsubheading Racket startup time
+
+When starting Racket in little computers, Geiser might have to wait a
+bit more than it expects (which is ten seconds, or ten thousand
+milliseconds, by default).  If you find that Geiser is giving up too
+quickly and complaining that no prompt was found, try to increase the
+value of @c{geiser-repl-startup-time} to, say, twenty seconds:
+
+@example
+(setq geiser-repl-startup-time 20000)
+@end example
+
+@noindent
+If you prefer, you can use the customize interface to, well, customise
+the above variable's value.
+
 @subsubheading History
 
 By default, Geiser won't record duplicates in your input history.  If you
diff --git a/elisp/geiser-repl.el b/elisp/geiser-repl.el
index 5027c28..770b5ca 100644
--- a/elisp/geiser-repl.el
+++ b/elisp/geiser-repl.el
@@ -107,6 +107,12 @@ expression, if any."
   :type 'integer
   :group 'geiser-repl)
 
+(geiser-custom--defcustom geiser-repl-startup-time 10000
+  "Time, in milliseconds, to wait for Racket to startup.
+If you have a slow system, try to increase this time."
+  :type 'integer
+  :group 'geiser-repl)
+
 
 ;;; Implementation-dependent parameters
 
@@ -302,7 +308,7 @@ module command as a string")
                      (error-message-string err)
                      "\n")
              (error "Couldn't start Geiser")))
-    (geiser-repl--wait-for-prompt 10000)))
+    (geiser-repl--wait-for-prompt geiser-repl-startup-time)))
 
 (defun geiser-repl--wait-for-prompt (timeout)
   (let ((p (point)) (seen) (buffer (current-buffer)))