ensure the last line has a trailing newline #8782
diff --git a/Lib/linecache.py b/Lib/linecache.py
index e7c33e1..c999851 100644
--- a/Lib/linecache.py
+++ b/Lib/linecache.py
@@ -133,6 +133,8 @@
except IOError, msg:
## print '*** Cannot open', fullname, ':', msg
return []
+ if lines and not lines[-1].endswith('\n'):
+ lines[-1] += '\n'
size, mtime = stat.st_size, stat.st_mtime
cache[filename] = size, mtime, lines, fullname
return lines
diff --git a/Lib/test/test_linecache.py b/Lib/test/test_linecache.py
index 2dd3672d..88346be 100644
--- a/Lib/test/test_linecache.py
+++ b/Lib/test/test_linecache.py
@@ -31,6 +31,11 @@
'''
+SOURCE_3 = '''
+def f():
+ return 3''' # No ending newline
+
+
class LineCacheTests(unittest.TestCase):
def test_getline(self):
@@ -63,6 +68,13 @@
empty = linecache.getlines('a/b/c/__init__.py')
self.assertEquals(empty, [])
+ def test_no_ending_newline(self):
+ self.addCleanup(support.unlink, support.TESTFN)
+ with open(support.TESTFN, "w") as fp:
+ fp.write(SOURCE_3)
+ lines = linecache.getlines(support.TESTFN)
+ self.assertEqual(lines, ["\n", "def f():\n", " return 3\n"])
+
def test_clearcache(self):
cached = []
for entry in TESTS:
diff --git a/Misc/NEWS b/Misc/NEWS
index 23b079c..768805b 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -29,6 +29,9 @@
Library
-------
+- Issue #8782: Add a trailing newline in linecache.updatecache to the last line
+ of files without one.
+
- Issue #8729: Return NotImplemented from collections.Mapping.__eq__ when
comparing to a non-mapping.