rust-config: add docstring to inner `get_parse` method
The signature is quite heavy, a docstring to explain the idea doesn't hurt.
fixbundle() {
grep -v 'saving bundle' | grep -v 'saved backup' | \
grep -v added | grep -v adding | \
grep -v "unable to find 'e' for patching" | \
grep -v "e: No such file or directory" | \
cat
}