Alternate configuration files not supported

[anitagraham]

If I use the command line option --config to specify an alternate config file, and I don't have a _config.yml, jekylll-plugin-support reports

>mode="${1:-development}";
>echo "Running in ${mode} mode"
>config_file="_config_${mode}.yml"

>bundle exec jekyll serve --config "$config_file" 
Running in development mode
Gem Load Error is: No such file or directory @ rb_sysopen - _config.yml

I encountered this error when I decided (wright or wrong) to separate my configs into _config_production.yml and _config_development.yml

I assume that if _config.yml did exist, that file would be used instead of the requested file.

[mslinn]

I was aware of Jekyll Support Plugin _config.yml behaviour, but had not thought of the --config flag. This flag would have been helpful in some other Jekyll-related projects also.

The ability to point to the appropriate config file would be a good improvement.