Filter `git show <commitId>` result with file extension

Question

Consider a very big changeset. Upon doing git show <sha1>, you get changes related to all files. But I am interested only in changes made to .cpp files, rest files are not useful for my analysis.

How can I filter them out of git show result?

Any command or option.

Answer 1

git show -- *.cpp works. Without --, the glob seems unable to work properly.

Answer 2

Answer given by @ElipieKay in comment section worked for me.

Prints file names having .cpp extension.

git show --name-status 29a9f891fd -- *.cpp      

Display the changes done to files with .cpp extension.

git show 29a9f891fd -- *.cpp

Answer 3

You can filter the diff which git show outputs by providing paths or patterns to match. So in your case:

git show "*.cpp"

You need to use the appropriate quoting for your shell to ensure that Git sees the wildcard (*.cpp) and that it isn't expanded by you shell first.