respect use_short_path on trace

fix #701

Author: ko1

lib/debug/frame_info.rb

@@ -27,8 +27,8 @@ def realpath
       location.absolute_path
     end
 
-    def pretty_path
-      return '#<none>' unless path = self.path
+    def self.pretty_path path
+     return '#<none>' unless path
       use_short_path = CONFIG[:use_short_path]
 
       case
@@ -45,6 +45,10 @@ def pretty_path
       end
     end
 
+    def pretty_path
+      FrameInfo.pretty_path path
+    end
+
     def name
       # p frame_type: frame_type, self: self
       case frame_type

lib/debug/tracer.rb

@@ -74,7 +74,7 @@ def skip_with_pattern?(tp)
     end
 
     def out tp, msg = nil, depth = caller.size - 1
-      location_str = colorize("#{tp.path}:#{tp.lineno}", [:GREEN])
+      location_str = colorize("#{FrameInfo.pretty_path(tp.path)}:#{tp.lineno}", [:GREEN])
       buff = "#{header(depth)}#{msg} at #{location_str}"
 
       if false # TODO: Ractor.main?