Rename git formatted patch to some nice name

[voxik]

Packaging SW for Fedora, I sometimes need to apply patch, which I'll download from GH, e.g.:

$ curl -OL https://github.com/rails/sprockets/pull/791.patch
 % Total % Received % Xferd Average Speed Time Time Time Current
 Dload Upload Total Spent Left Speed
 0 0 0 0 0 0 0 0 --:--:-- --:--:-- 
--:--:-- 0
100 12717 0 12717 0 0 21765 0 --:--:-- --:--:-- --:--:-- 
58603

The problem with this is that I end up with the "791.patch" file, while I'd like have a file with similar name as if I have used the git command:

$ git format-patch -1 6554b6d
0001-Fix-Minitest-constant-name-in-tests.patch

So I wonder, would you consider to implement some tool, which would renamed the patch in this way?

I have originally tried to convince Git folks to expose such functionality somewhere, but I failed :/ So maybe this project might be interested in this.

[voxik]

This is my naive implementation:

$ cat rename-patch 
#!/usr/bin/bash

mv $1 $(sed -ne '/^Subject: /{
 s/^Subject: *\[PATCH[^]]*\] *//;
 s/[^a-zA-Z0-9]/-/g;
 s/--*/-/g;
 s/$/\.patch/;
 p;
 q;
}' $1)