Ticket #219: pyyaml-ticket-219.patch

tests/data/tab-in-scalar.data

@@ +1 @@
+L       S

tests/data/tab-in-scalar.canonical

@@ +1 @@
+%YAML 1.1
+---
+"L\tS"

lib/yaml/scanner.py

@@ -1322 +1322 @@
 
     def scan_plain_spaces(self, indent, start_mark):
         # See the specification for details.
-        # The specification is really confusing about tabs in plain scalars.
-        # We just forbid them completely. Do not use tabs in YAML!
         chunks = []
         length = 0
-        while self.peek(length) in u' ':
+        while self.peek(length) in u' \t':
             length += 1
         whitespaces = self.prefix(length)
         self.forward(length)