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authorDanny Milosavljevic <dannym@scratchpost.org>2017-05-31 19:38:49 +0200
committerDanny Milosavljevic <dannym@scratchpost.org>2017-05-31 19:38:49 +0200
commitcdc701ea48207b16fd181cac3c74172c6db483ed (patch)
tree44abead553fe346c860a170800823be7df622eff /gnu/build
parent1c797d4bfb26ac9da6fdf533b533e5d42fe7ef91 (diff)
gnu: build: Improve comments.
* gnu/build/file-systems.scm (iso9660-superblock-volume-name): Add clarifying comment.
Diffstat (limited to 'gnu/build')
-rw-r--r--gnu/build/file-systems.scm1
1 files changed, 1 insertions, 0 deletions
diff --git a/gnu/build/file-systems.scm b/gnu/build/file-systems.scm
index 17c1182ce6..3b831c0ec0 100644
--- a/gnu/build/file-systems.scm
+++ b/gnu/build/file-systems.scm
@@ -283,6 +283,7 @@ SBLOCK as a bytevector."
(define (iso9660-superblock-volume-name sblock)
"Return the volume name of SBLOCK as a string. The volume name is an ASCII
string. Trailing spaces are trimmed."
+ ;; Note: Valid characters are of the set "[0-9][A-Z]_" (ECMA-119 Appendix A)
(string-trim-right (latin1->string (sub-bytevector sblock 40 32)
(lambda (c) #f)) #\space))