narrowspec: document constraints when validating patterns
Differential Revision: https://phab.mercurial-scm.org/D2190
--- a/hgext/narrow/narrowspec.py Mon Feb 12 14:15:52 2018 -0500
+++ b/hgext/narrow/narrowspec.py Mon Feb 12 14:27:32 2018 -0500
@@ -83,7 +83,11 @@
return len((s + 'x').splitlines())
def _validatepattern(pat):
- """Validates the pattern and aborts if it is invalid."""
+ """Validates the pattern and aborts if it is invalid.
+
+ Patterns are stored in the narrowspec as newline-separated
+ POSIX-style bytestring paths. There's no escaping.
+ """
# We use newlines as separators in the narrowspec file, so don't allow them
# in patterns.