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[ruby/reline] Suppress error when check ambiguous char width in LANG=C

Browse source 
https://github.com/ruby/reline/commit/623dffdd75
This commit is contained in:
aycabta 2020-03-24 13:56:22 +09:00
parent 8911b3d3e8
commit 69cd27c98e
1 changed files with 8 additions and 2 deletions
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10
lib/reline.rb
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@ -336,8 +336,14 @@ module Reline
@ambiguous_width = 2 if Reline::IOGate == Reline::GeneralIO or STDOUT.is_a?(File)
return if ambiguous_width
Reline::IOGate.move_cursor_column(0)
output.write "\u{25bd}"
@ambiguous_width = Reline::IOGate.cursor_pos.x
begin
output.write "\u{25bd}"
rescue Encoding::UndefinedConversionError
# LANG=C
@ambiguous_width = 1
else
@ambiguous_width = Reline::IOGate.cursor_pos.x
end
Reline::IOGate.move_cursor_column(0)
Reline::IOGate.erase_after_cursor
end