[gnu] externals/xref-union updated (140bdf53e1 -> 9a8df57538)

[ELPA Syncer]

elpasync pushed a change to branch externals/xref-union.

      from  140bdf53e1 Update documentation to link to Codeberg
       new  40baff9b10 Match references on line in file (#2)
       new  4ef6bd38f2 Simplify 'xref-backend-identifier-at-point' loop
       new  9a8df57538 Fix header structure


Summary of changes:
 xref-union.el | 24 +++++++++++++++++-------
 1 file changed, 17 insertions(+), 7 deletions(-)