[ruby/error_highlight] Support hard tabs
Now, the highlight line is created by replacing non-tab characters with spaces, and keeping all hard tabs as-is. This means the highlight line has the completely same indentation as the code snippet line.
Fixes #7
https://github.com/ruby/error_highlight/commit/38f20fa542
[ruby/error_highlight] Support hard tabs
Now, the highlight line is created by replacing non-tab characters with
spaces, and keeping all hard tabs as-is. This means the highlight line
has the completely same indentation as the code snippet line.
Fixes #7
https://github.com/ruby/error_highlight/commit/38f20fa542