Indent right side expressions in assignments where the left side includes a type declaration

[mverzilli]

Fixes #15421

With this change, the examples given by issue OP work as expected:

x = if rand(2) == 1
      "One"
    else
      "Zero"
    end

x = case rand(2)
    when 0
      "Zero"
    when 1
      "One"
    end

[straight-shoota]

Need to apply the formatter.

[ysbaddaden]

@mverzilli This is tricky: you fixed the formatter and this is affecting the crystal source code, so you must compile a local compiler then use it to format the source code. That will fix CI.

$ make crystal
$ bin/crystal tool format

Note: don't format the lib folder. It's vendored shard dependencies.

[straight-shoota]

Shorter: make crystal format. Takes care of formatting the right directories.

[mverzilli]

so you must compile a local compiler then use it to format the source code

🤦 that was a dumb omission. I'll try to squeeze that in tomorrow. Thanks for the patience!