feature request: git summary --line by file extension

[chanansh]

currently, git summary counts all files. Sometimes large files leak into the repo and I would like to filter by file extension, e.g. .py

[tfendin]

@chanansh Doesn't git summary --line *.py give you the expected result? If not, please elaborate.

[vanpipy]

There are some interesting questions.

1. what is the result of the git summary --line with a pattern like *.py?
   Following the example of a git summary --line, there are two keywords - lines and authors.
   So if the *.py does it work and the result should appear in the lines and authors together.

2. Is the pattern work with the --line only?
   Maybe not, so it is not a good way to use a pattern like *.py directly. A parameter will be better.