Handle evaluation of Windows-style env var on a non-Windows machine #16
Description
If a Windows-style env var is evaluated on a non-Windows machine, then a Bash environment variable of the same name is searched for and used, if found. A debug-level log message should be emitted stating what happened.
- If an exact case-sensitive match is found, it is used.
- If a case-insensitive match is found, it is used, and a warning is issued.
- If more than one case-insensitive match is found, Jekyll is shut down.
FlexibleInclude: \Code\User\keybindings.json does not exist,