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The libfprint0 postinst script calls udevadmin trigger for all the supported
USB readers. The list of readers used in that file is generated by calling the
following awk script:
/plugdev/ {
printf ("\tudevadm trigger --action=add " )
for (i=1;i<=NF; i++){
if (match($i,/idVendor/)>0) {
match($i, /"[^"]*"/); printf ("--attr-match=idVendor=%s ",substr($i,RSTART+1,RLENGTH-2))
}
if (match($i,/idProduct/)>0) {
match($i, /"[^"]*"/); printf ("--attr-match=idProduct=%s",substr($i,RSTART+1,RLENGTH-2))
}
};
printf("\n")
}
When preparing a new upstream release, this script should be called against the
udev .rules file generated during the build of the package
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