From: Tomáš Virtus <nechtom@gmail.com>
Date: Wed, 19 Feb 2020 14:14:30 +0000 (+0100)
Subject: Fix duplicate Syslinux entries (2)
X-Git-Tag: v0.18.0~9^2
X-Git-Url: https://git.grml.org/?p=grml2usb.git;a=commitdiff_plain;h=480b9746fc91e73c929a0b70b58472ed5cce6f1b

Fix duplicate Syslinux entries (2)

Commit f0e3c936 changed open mode to "r+", but this mode does not create
missing files.

Revert open mode back to "a+" and add seek to beginning of the file.
---

diff --git a/grml2usb b/grml2usb
index 5a94e10..6cf456a 100755
--- a/grml2usb
+++ b/grml2usb
@@ -1323,7 +1323,8 @@ def add_entry_if_not_present(filename, entry):
     @filename: name of the file
     @entry: data to write to the file
     """
-    data = open(filename, "r+")
+    data = open(filename, "a+")
+    data.seek(0)
     for line in data:
         if line == entry:
             break