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-rw-r--r--guix/ui.scm21
-rw-r--r--tests/ui.scm11
2 files changed, 18 insertions, 14 deletions
diff --git a/guix/ui.scm b/guix/ui.scm
index 5ae082fc0a..3a0a6501d1 100644
--- a/guix/ui.scm
+++ b/guix/ui.scm
@@ -635,16 +635,17 @@ report what is prerequisites are available for download."
(define (right-arrow port)
"Return either a string containing the 'RIGHT ARROW' character, or an ASCII
replacement if PORT is not Unicode-capable."
- (with-fluids ((%default-port-encoding (port-encoding port)))
- (let ((arrow "→"))
- (catch 'encoding-error
- (lambda ()
- (call-with-output-string
- (lambda (port)
- (set-port-conversion-strategy! port 'error)
- (display arrow port))))
- (lambda (key . args)
- "->")))))
+ (let ((encoding (port-encoding port))
+ (arrow "→"))
+ (catch 'encoding-error
+ (lambda ()
+ (call-with-output-string
+ (lambda (port)
+ (set-port-encoding! port encoding)
+ (set-port-conversion-strategy! port 'error)
+ (display arrow port))))
+ (lambda (key . args)
+ "->"))))
(define* (show-manifest-transaction store manifest transaction
#:key dry-run?)
diff --git a/tests/ui.scm b/tests/ui.scm
index 058207e8b9..cfe417d497 100644
--- a/tests/ui.scm
+++ b/tests/ui.scm
@@ -248,9 +248,12 @@ Second line" 24))
(lambda ()
(show-manifest-transaction store m t)))))
(string-match "guile\t1.8.8 -> 2.0.9"
- (with-fluids ((%default-port-encoding "ISO-8859-1"))
- (with-error-to-string
- (lambda ()
- (show-manifest-transaction store m t)))))))))
+ (with-error-to-string
+ (lambda ()
+ ;; In Guile 2.2, %DEFAULT-PORT-ENCODING doesn't
+ ;; influence the encoding of string ports.
+ (set-port-encoding! (current-error-port)
+ "ISO-8859-1")
+ (show-manifest-transaction store m t))))))))
(test-end "ui")