From 7dbd75b3cff33c90c7427740be01542d1eff03b1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ludovic=20Court=C3=A8s?= <ludo@gnu.org>
Date: Tue, 21 Mar 2017 22:07:08 +0100
Subject: [PATCH] file-systems: Add missing docstring.

* gnu/system/file-systems.scm (file-system-type-predicate): Add
docstring.
---
 gnu/system/file-systems.scm | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gnu/system/file-systems.scm b/gnu/system/file-systems.scm
index 3bd072a0bc..bbac23fbdf 100644
--- a/gnu/system/file-systems.scm
+++ b/gnu/system/file-systems.scm
@@ -417,6 +417,8 @@ (define %network-file-mappings
               %network-configuration-files))
 
 (define (file-system-type-predicate type)
+  "Return a predicate that, when passed a file system, returns #t if that file
+system has the given TYPE."
   (lambda (fs)
     (string=? (file-system-type fs) type)))