From 4d0cf5dfb43d7b95aa3bb6463e1a62a6aa578dcb Mon Sep 17 00:00:00 2001
From: Jorge Bucaran <mail@jorgebucaran.com>
Date: Sun, 1 May 2016 12:37:29 +0900
Subject: [PATCH] Run file age check, only if we can get a value from
 __fisher_get_file_age.

This probably means the user does not have python installed on their
system and we will be download the index every time the user runs
ls-remote.

A more sensitive, python-less solution to check file age since the last
time the file was modified should be more desirable.
---
 fisher.fish | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/fisher.fish b/fisher.fish
index 710f70b..43ec2d6 100644
--- a/fisher.fish
+++ b/fisher.fish
@@ -817,8 +817,10 @@ function __fisher_remote_index_update
     end
 
     if test -s "$index"
-        if test (__fisher_get_file_age "$index") -lt "$interval"
-            return
+        if set -l file_age (__fisher_get_file_age "$index")
+            if test "$file_age" -lt "$interval"
+                return
+            end
         end
     end