dot/lisp-init.lisp: Get CLisp to save and restore its REPL history.

[profile] / dot / lisp-init.lisp

diff --git a/dot/lisp-init.lisp b/dot/lisp-init.lisp
index d36ae5f744cb11d60853f8e8bd3a11119370ff45..da50a6f2ab71ed6d7675024ed9fbb7402ba5bfdb 100644 (file)
--- a/dot/lisp-init.lisp
+++ b/dot/lisp-init.lisp
@@ -1,16 +1,25 @@
+;;; -*-lisp-*-
+
 (cl:defpackage #:mdw-hacks
   (:use #:cl))
 (cl:defparameter mdw-hacks::*previous-package* cl:*package*)
 (cl:in-package #:mdw-hacks)
 
 ;; Shut up.
-(setf *load-verbose* nil)
-(setf *compile-verbose* nil)
-#+cmu (setf *gc-verbose* nil)
+(setf *load-verbose* nil
+      *compile-verbose* nil)
+
+#+cmu
+(setf ext:*gc-verbose* nil
+      ext:*require-verbose* nil)
 
 ;; Obtain ASDF from somewhere.
 (require "asdf")
 
+;; Get CMU CL to quit on EOF.
+#+cmu
+(setf ext:*batch-mode* t)
+
 ;; Tell SBCL where to find its source source.
 #+sbcl
 (sb-ext:set-sbcl-source-location #p"/usr/share/sbcl-source/")
@@ -29,7 +38,33 @@ (let* ((homestring (or #+sbcl (sb-ext:posix-getenv "HOME")
          ("CL:SYSTEMS;**;*.*.*" #p"/usr/share/common-lisp/systems/**/*.*"))))
 
 ;; Various fixings.
-#+clisp (setf custom:*parse-namestring-ansi* t)
+#+clisp
+(setf custom:*parse-namestring-ansi* t)
+
+;; CLisp history.
+#+(and clisp readline)
+(progn
+  (export '(*history-file* *history-size*))
+  (defvar *history-file* (format nil "~A/.clisp-history" (ext:getenv "HOME"))
+    "File to preserve the REPL history.")
+  (defvar *history-size* 1000)
+  (unless (and (probe-file *history-file*) nil)
+    (let (old-umask stream)
+      ;; Ugh.  There's no proper open(2) veneer.  Play with umask(2) to avoid
+      ;; a window in which an adversary can open the file.
+      (unwind-protect
+          (setf old-umask (os:umask #o077)
+                stream (open *history-file*
+                             :direction :output
+                             :if-exists :overwrite
+                             :if-does-not-exist :create))
+       (when stream (close stream))
+       (when old-umask (os:umask old-umask)))))
+  (readline:read-history *history-file*)
+  (if *history-size* (readline:stifle-history *history-size*)
+      (readline:unstifle-history))
+  (push (lambda () (readline:write-history *history-file*))
+       custom:*fini-hooks*))
 
 ;; Shebang.
 (set-dispatch-macro-character
@@ -49,7 +84,9 @@ (defun crank-swank (&rest args)
     (set (find-symbol "*GLOBAL-DEBUGGER*" swank) nil)
     (apply (find-symbol "CREATE-SERVER" swank) args)))
 
-#+asdf (setf asdf:*compile-file-failure-behaviour* :warn)
+;; Treat warnings as, err, warnings.
+#+asdf
+(setf asdf:*compile-file-failure-behaviour* :warn)
 
 ;; Done.
 (pushnew :mdw *features*)