git add -p doesn't respect diff.context

Hi,

When doing git add -p, the default of 3 context lines is used, ignoring the diff.context.

git add -p is using git-diff-files, and diff.context is being read in
git_diff_ui_config, so the comment above that function applies:
/*
 * These are to give UI layer defaults.
 * The core-level commands such as git-diff-files should
 * never be affected by the setting of diff.renames
 * the user happens to have in the configuration file.
 */

I guess the question is whether it's diff-files or add -p that should honor diff.context. Or should it have its own separate config?

Mike