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-rw-r--r--railties/lib/rails/backtrace_cleaner.rb13
1 files changed, 9 insertions, 4 deletions
diff --git a/railties/lib/rails/backtrace_cleaner.rb b/railties/lib/rails/backtrace_cleaner.rb
index 8cc8eb1103..5276eb33c9 100644
--- a/railties/lib/rails/backtrace_cleaner.rb
+++ b/railties/lib/rails/backtrace_cleaner.rb
@@ -4,12 +4,16 @@ module Rails
class BacktraceCleaner < ActiveSupport::BacktraceCleaner
APP_DIRS_PATTERN = /^\/?(app|config|lib|test)/
RENDER_TEMPLATE_PATTERN = /:in `_render_template_\w*'/
+ EMPTY_STRING = ''.freeze
+ SLASH = '/'.freeze
+ DOT_SLASH = './'.freeze
def initialize
super
- add_filter { |line| line.sub("#{Rails.root}/", '') }
- add_filter { |line| line.sub(RENDER_TEMPLATE_PATTERN, '') }
- add_filter { |line| line.sub('./', '/') } # for tests
+ @root = "#{Rails.root}/".freeze
+ add_filter { |line| line.sub(@root, EMPTY_STRING) }
+ add_filter { |line| line.sub(RENDER_TEMPLATE_PATTERN, EMPTY_STRING) }
+ add_filter { |line| line.sub(DOT_SLASH, SLASH) } # for tests
add_gem_filters
add_silencer { |line| line !~ APP_DIRS_PATTERN }
@@ -21,7 +25,8 @@ module Rails
return if gems_paths.empty?
gems_regexp = %r{(#{gems_paths.join('|')})/gems/([^/]+)-([\w.]+)/(.*)}
- add_filter { |line| line.sub(gems_regexp, '\2 (\3) \4') }
+ gems_result = '\2 (\3) \4'.freeze
+ add_filter { |line| line.sub(gems_regexp, gems_result) }
end
end
end