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authorLudovic Courtès <ludo@gnu.org>2017-03-08 22:21:31 +0100
committerLudovic Courtès <ludo@gnu.org>2017-03-08 23:42:53 +0100
commit1062063a65036f32a061c54866d33ffe079ec44e (patch)
tree99353fb630fadaa654d3cdb856669b878a098a26
parent30906825cb99122f6b068a1d9223937757d75ce5 (diff)
downloadguix-1062063a65036f32a061c54866d33ffe079ec44e.tar.gz
ui: Don't use '%default-port-encoding' to set the encoding of string ports.
* guix/ui.scm (right-arrow): Call 'set-port-encoding!' to set PORT's
encoding; remove use of 'with-fluids'.  This is for compatibility with
Guile 2.2 where the encoding of string ports is not influenced by
%DEFAULT-PORT-ENCODING.
* tests/ui.scm ("show-manifest-transaction"): Likewise.
-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")