SVN export just the changed files from tags

Question

Does anyone know how to export only the changed files from two tags using svn?

Lets say I have tag 1.0 and then later fix bugs in the trunk. Next I am ready for a new

Answer 1

Based on Stefan's idea:

REV=123456
URL=https://...
BASEDIR=some_dir
svn diff --summarize -c $REV $URL | while read A B; do 
    svn cat -r $REV $B > ${B##*$BASEDIR}
done