I am doing compressing of JavaScript files and the compressor is complaining that my files have  character in them.
How can I search for these cha
In Sublime Text you can install the Highlighter package and then customize the regular expression in your user settings.
Here I added \uFEFF to the end of the highlighter_regex property.
{
"highlighter_enabled": true,
"highlighter_regex": "(\t+ +)|( +\t+)|[\u2026\u2018\u2019\u201c\u201d\u2013\u2014\uFEFF]|[\t ]+$",
"highlighter_scope_name": "invalid",
"highlighter_max_file_size": 1048576,
"highlighter_delay": 3000
}
To overwrite the default package settings place the file here:
~/.config/sublime-text-3/Packages/User/highlighter.sublime-settings