From ea772dae0d8bb266233c3fd9e2012281a821ef44 Mon Sep 17 00:00:00 2001
From: Josh Stone <jistone@redhat.com>
Date: Fri, 2 Nov 2018 16:20:22 -0700
Subject: [PATCH] Limit newVersion's re.sub to a single replacement

Python 3.7 changed `re.sub` to replace empty matches next to a previous
non-empty match, which caused `SpecFile.newVersion` to double its
replacements.  We can use `count=1` to limit this.

ref: https://bugs.python.org/issue32308
---
 rpmdev-bumpspec | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/rpmdev-bumpspec b/rpmdev-bumpspec
index 35e6c9c..06737b5 100755
--- a/rpmdev-bumpspec
+++ b/rpmdev-bumpspec
@@ -134,13 +134,13 @@ class SpecFile(object):
             original = self.lines[i]
             if self.lines[i].lower().startswith('version:'):
                 self.lines[i] = re.sub(
-                    r'[^: \t]*$', v, self.lines[i].rstrip()) + '\n'
+                    r'[^: \t]*$', v, self.lines[i].rstrip(), count=1) + '\n'
                 changed = changed or self.lines[i] != original
             elif self.lines[i].lower().startswith('release:'):
                 # split and reconstruct to preserve whitespace
                 split = re.split(r':', self.lines[i].rstrip())
                 self.lines[i] = split[0] + ':' + \
-                    re.sub(r'[^ \t]*$', r, split[1]) + '\n'
+                    re.sub(r'[^ \t]*$', r, split[1], count=1) + '\n'
                 changed = changed or self.lines[i] != original
 
         return changed
-- 
2.17.2