Some I/O in test doesn't have "position"

Just returns column 1 for ambiguous width because this I/O is not tty and can't seek.
ruby · May 11, 2020 · 7a7854d · 7a7854d
1 parent d39be24
commit 7a7854d
Showing 1 changed file with 10 additions and 3 deletions.
diff --git a/lib/reline/ansi.rb b/lib/reline/ansi.rb
@@ -116,9 +116,16 @@ def self.cursor_pos
       column = m[:column].to_i - 1
       row = m[:row].to_i - 1
     rescue Errno::ENOTTY
-      buf = @@output.pread(@@output.pos, 0)
-      row = buf.count("\n")
-      column = buf.rindex("\n") ? (buf.size - buf.rindex("\n")) - 1 : 0
+      begin
+        buf = @@output.pread(@@output.pos, 0)
+        row = buf.count("\n")
+        column = buf.rindex("\n") ? (buf.size - buf.rindex("\n")) - 1 : 0
+      rescue Errno::ESPIPE
+        # Just returns column 1 for ambiguous width because this I/O is not
+        # tty and can't seek.
+        row = 0
+        column = 1
+      end
     end
     Reline::CursorPos.new(column, row)
   end