summaryrefslogtreecommitdiff
path: root/ext
diff options
context:
space:
mode:
Diffstat (limited to 'ext')
-rw-r--r--ext/psych/lib/psych/scalar_scanner.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/psych/lib/psych/scalar_scanner.rb b/ext/psych/lib/psych/scalar_scanner.rb
index fa2d385a63..8727adecb4 100644
--- a/ext/psych/lib/psych/scalar_scanner.rb
+++ b/ext/psych/lib/psych/scalar_scanner.rb
@@ -24,7 +24,7 @@ module Psych
return string if @string_cache.key?(string)
case string
- when /^[A-Za-z~]/
+ when /^[A-Za-z_~]/
if string.length > 5
@string_cache[string] = true
return string