D12408: bookmarks: use new function for getting first line of string

[martinvonz (Martin von Zweigbergk)]

martinvonz created this revision.
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REPOSITORY
  rHG Mercurial

BRANCH
  default

REVISION DETAIL
  https://phab.mercurial-scm.org/D12408

AFFECTED FILES
  mercurial/bookmarks.py

CHANGE DETAILS

diff --git a/mercurial/bookmarks.py b/mercurial/bookmarks.py
--- a/mercurial/bookmarks.py
+++ b/mercurial/bookmarks.py
@@ -27,6 +27,7 @@
     util,
 )
 from .utils import (
+    stringutil,
     urlutil,
 )
 
@@ -342,7 +343,7 @@
     # No readline() in osutil.posixfile, reading everything is
     # cheap.
     content = repo.vfs.tryread(b'bookmarks.current')
-    mark = encoding.tolocal((content.splitlines() or [b''])[0])
+    mark = encoding.tolocal(stringutil.firstline(content))
     if mark == b'' or mark not in marks:
         mark = None
     return mark



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