summaryrefslogtreecommitdiff
path: root/ext/psych/lib/psych
diff options
context:
space:
mode:
Diffstat (limited to 'ext/psych/lib/psych')
-rw-r--r--ext/psych/lib/psych/scalar_scanner.rb4
1 files changed, 3 insertions, 1 deletions
diff --git a/ext/psych/lib/psych/scalar_scanner.rb b/ext/psych/lib/psych/scalar_scanner.rb
index ce4b767..9130746 100644
--- a/ext/psych/lib/psych/scalar_scanner.rb
+++ b/ext/psych/lib/psych/scalar_scanner.rb
@@ -24,7 +24,9 @@ module Psych
return string if @string_cache.key?(string)
case string
- when /^[A-Za-z_~]/
+ # Check for a String type, being careful not to get caught by hash keys, hex values, and
+ # special floats (e.g., -.inf).
+ when /^[^\d\.:-]?[A-Za-z_\s!@#\$%\^&\*\(\)\{\}\<\>\|\/\\~;=]+/
if string.length > 5
@string_cache[string] = true
return string