Git: Show all of the various changes to a single line in a specified file over the entire git history

Question

I\'ve looked around, and am not sure if this is possible, but here goes:

I have a (javascript) file (say /lib/client.js) in which I have a unique identifier assigned

Answer 1

You can also do this with gitk:

gitk file.js

In the "commit" drop down, choose "adding/removing string:" and in the text box next to it, enter "var identifier =", and any commits that add or remove lines that contain that string will be highlighted.