Load and save repl history.

* parser.c (repl): If a HOME environment variable
exists, then load the .txr_history file from the user's home
directory and save it when exiting.

* sysif.c (getenv_wrap): Static function changed to extern.

* sysif.h (getenv_wrap): Declared.

1 files changed, 1 insertions, 0 deletions

diff --git a/sysif.h b/sysif.h
index c54ddbad..b2b5ce2f 100644
--- a/sysif.h
+++ b/sysif.h
@@ -32,4 +32,5 @@ extern val dev_s, ino_s, mode_s, nlink_s, uid_s;
 extern val gid_s, rdev_s, size_s, blksize_s, blocks_s;
 extern val atime_s, mtime_s, ctime_s;
 
+val getenv_wrap(val name);
 void sysif_init(void);