diff options
| author | Jeremy Evans <code@jeremyevans.net> | 2021-05-13 14:42:00 -0700 |
|---|---|---|
| committer | aycabta <aycabta@gmail.com> | 2021-06-21 17:58:48 +0900 |
| commit | 242bad9a87dbfc8a6af829ee3da3853925be14ab (patch) | |
| tree | aa0f7e6aff0dd1d7772ada25f1efc4fdcfceadab /lib/reline | |
| parent | 26f31f880cef107d4c13dfe90a988c0f2e185338 (diff) | |
[ruby/reline] Fix Reline::Unicode.calculate_width when input is not a TTY
This fixes an error when output is redirected:
```
$ run_ruby -rreline -e '$stderr.puts Reline::Unicode.calculate_width("\u221a").inspect' </dev/null >/dev/null
/home/jeremy/tmp/ruby/lib/reline/ansi.rb:189:in `raw': Operation not supported by device (Errno::ENODEV)
```
The @@encoding -> defined?(@@encoding) changes is necessary because
without that part of the commit, the following error would be raised
by the above command:
```
/home/jeremy/tmp/reline/lib/reline/general_io.rb:10:in `encoding': uninitialized class variable @@encoding in Reline::GeneralIO (NameError)
```
Problem reported and initial patch for Windows provided by
Richard Sharman.
I tested this only on OpenBSD, but hopefully it works for other
operating systems.
Fixes [Bug #17493]
https://github.com/ruby/reline/commit/c001971bb3
Diffstat (limited to 'lib/reline')
| -rw-r--r-- | lib/reline/general_io.rb | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/reline/general_io.rb b/lib/reline/general_io.rb index 4f605628a3..2f87d718c6 100644 --- a/lib/reline/general_io.rb +++ b/lib/reline/general_io.rb @@ -7,7 +7,7 @@ class Reline::GeneralIO end def self.encoding - if @@encoding + if defined?(@@encoding) @@encoding elsif RUBY_PLATFORM =~ /mswin|mingw/ Encoding::UTF_8 |