The xpatch package generalizes the macro patching commands provided by
P. Lehmann's `etoolbox'.

This is version 0.3a of the package

Changes from version 0.3
o Changed deprecated function \token_get_replacement_spec:N
  to \cs_replacement_spec:N

Changes from version 0.2
o Added \xpatch...format, \xpreto...format and \xappto...format  macros 
  for patching internal biblatex macros defined \Declare...Format
  (under kind request by Audrey Boruvka)

 Copyright 2012-2020 Enrico Gregorio

 It may be distributed and/or modified under the conditions of the
 LaTeX Project Public License (LPPL), either version 1.3c of this
 license or (at your option) any later version.  The latest version
 of this license is in the file

   http://www.latex-project.org/lppl.txt

 Author: Enrico Gregorio
         Enrico dot Gregorio at univr dot it

 This work has the LPPL maintenance status "author-maintained".

 This work consists of the following files:

README (this file)
xpatch.dtx
xpatch.ins
xpatch.pdf

 and of the derived file

xpatch.sty

To install the distribution:

o run "latex xpatch.ins"
o move "xpatch.sty" to locations where LaTeX will find
  it (the FAQ on CTAN in /help/uktug-FAQ gives more
  information about this magic place

2012/10/02
Enrico Gregorio