alias: abort on missing positional args (
issue3331)
phases: fix a non-standard debug message
- add missing newline
- ditch gratuitous use of string formatting with dict
- fix so it actually does string formatting ('%' rather than ',')
- inline unnecessary local variable
- downcase first word
convert/git: abort if git submodules are detected (
issue2150)
This improves the error message when convert encounters a git
submodule. Now, instead of a git-cat-file error, we'll directly report
the lack of support for git submodules.