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-rw-r--r--lib/rdoc/stats/normal.rb4
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/rdoc/stats/normal.rb b/lib/rdoc/stats/normal.rb
index f1a88d4a6b..64e20cc3c8 100644
--- a/lib/rdoc/stats/normal.rb
+++ b/lib/rdoc/stats/normal.rb
@@ -1,3 +1,5 @@
+require 'io/console/size'
+
##
# Stats printer that prints just the files being documented with a progress
# bar
@@ -20,7 +22,7 @@ class RDoc::Stats::Normal < RDoc::Stats::Quiet
# Print a progress bar, but make sure it fits on a single line. Filename
# will be truncated if necessary.
- terminal_width = (ENV['COLUMNS'] || 80).to_i
+ terminal_width = IO.console_size[1].to_i.nonzero? || 80
max_filename_size = terminal_width - progress_bar.size
if filename.size > max_filename_size then