Re: [PATCH v3 0/5] mingw: handle absolute paths in expand_user_path()

"Johannes Schindelin via GitGitGadget" [off-list ref]
writes:

 * Since our convention of %(...) interpolation does not involve uppercase
   keywords, I now use a lowercase one.

Makes sense.

 * Since this keyword is interpolated to the compiled-in prefix if built
   without runtime prefix support, I dropped the runtime part of the
   keyword.

I have this nagging feeling that %(prefix) may be (mistakenly)
expected to interporate to $(git rev-parse --show-prefix).  Of
course, nobody would expect that in paths in the configuration
files, but because we are borrowing %(token) convention from
elsewhere, it is not outragous to imagine that either "for-each-ref"
family or "log" family of placeholders may want to use %(prefix)"
for such purpose (for that matter, they may also be helped to have
the runtime-prefix information available).

Perhaps %(installPrefix) or something may have less chance of making
us regret later.  I am just raising this as a possible problem; I
personally would not be confused if we settled on the %(prefix).

 * Renamed the expand_user_path() to interpolate_path(), to remove the
   distraction as to the implementation detail which things get to be
   interpolated (because we extend it to interpolate more than just a home
   directory, which might well be unclear from the former name, anyway).

Great.

 * Adjusted the code comment above the interpolate_path() to remove a stale
   part, clarify another part, and to extend it to talk about the prefix
   expansion, too.

These looked good, too.

Thanks.