10/12: pack: Allow for "-S /opt/foo=".

[Ludovic Courtès]

civodul pushed a commit to branch master
in repository guix.

commit db3f2b61adfe56d69029ec5f6d962462a50a1f33
Author: Ludovic Courtès <address@hidden>
Date:   Thu Mar 16 22:46:43 2017 +0100

    pack: Allow for "-S /opt/foo=".
    
    Reported by Andy Wingo.
    
    * guix/scripts/pack.scm (%options): Use 'string-split' instead of
    'string-tokenize'.
---
 guix/scripts/pack.scm | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/guix/scripts/pack.scm b/guix/scripts/pack.scm
index edeb82f..74d4ee6 100644
--- a/guix/scripts/pack.scm
+++ b/guix/scripts/pack.scm
@@ -283,9 +283,10 @@ with COMPRESSOR.  It can be passed to 'docker load'."
                                result)))
          (option '(#\S "symlink") #t #f
                  (lambda (opt name arg result)
-                   (match (string-tokenize arg
-                                           (char-set-complement
-                                            (char-set #\=)))
+                   ;; Note: Using 'string-split' allows us to handle empty
+                   ;; TARGET (as in "/opt/guile=", meaning that /opt/guile is
+                   ;; a symlink to the profile) correctly.
+                   (match (string-split arg (char-set #\=))
                      ((source target)
                       (let ((symlinks (assoc-ref result 'symlinks)))
                         (alist-cons 'symlinks