Add readlines() to _Subfile class. Not clear who would need it, but

Chris Lawrence sent me a broken version; this one is a tad simpler and
more conforming to the standard.

diff --git a/Lib/mailbox.py b/Lib/mailbox.py
index f965b0fd86725a98b59233d396ed68e11c270f74..3c758ff6e12d12e177e06ab2145a1b6a9e5974e3 100755 (executable)
--- a/Lib/mailbox.py
+++ b/Lib/mailbox.py
@@ -66,6 +66,19 @@ class _Subfile:
                self.pos = self.fp.tell()
                return data
 
+        def readlines(self, sizehint = -1):
+               lines = []
+               while 1:
+                       line = self.readline()
+                       if not line:
+                               break
+                       lines.append(line)
+                       if sizehint >= 0:
+                               sizehint = sizehint - len(line)
+                               if sizehint <= 0:
+                                       break
+               return lines
+
        def tell(self):
                return self.pos - self.start