magit/magit — pull request #685 by mgalgs (2013-06-13 19:07:18+00:00)
Title: Add customize variable for default log range

Using git log without specifying a range is very slow on some git
repositories (like the Linux kernel). It's tedious to have to specify
a custom range every time you need to look at the log. Add a customize
variable for the default log range that can be set to things like
"HEAD~100..HEAD".

Left uncustomized, this variable introduces no user-visible changes.