* guile-readline/ice-9/readline.scm (history-file): When the HOME
environment variable is unset, use the empty string in its place.
---
Hi,
If a Guile program uses the readline module without setting HOME, it
will fail due to string-append getting a #f argument. In particular,
this necessitates workarounds when starting GNU dmd early in the boot
process. To illustrate this, try:
guile -c '(use-modules (ice-9 readline))(display "working\n")'
And then:
env -u HOME \
guile -c '(use-modules (ice-9 readline))(display "working\n")'
Let me know if there is a better alternative for handling this case, and
I can send another patch.
Thanks.
David
guile-readline/ice-9/readline.scm | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/guile-readline/ice-9/readline.scm
b/guile-readline/ice-9/readline.scm
index 02e68af..0979fd3 100644
--- a/guile-readline/ice-9/readline.scm
+++ b/guile-readline/ice-9/readline.scm
@@ -119,7 +119,8 @@
(define-once the-readline-port #f)
(define-once history-variable "GUILE_HISTORY")
-(define-once history-file (string-append (getenv "HOME") "/.guile_history"))
+(define-once history-file
+ (string-append (or (getenv "HOME") "") "/.guile_history"))
(define-public readline-port
(let ((do (lambda (r/w)
--
1.9.3
