+buildrune=$(
+ t-dgit-manpage 7 dgit-user | \
+ perl -ne '
+ next unless m/^ +Using sbuild$/ .. 0;
+ next unless m/^ +\%/ .. 0;
+ next if !m/\S/ .. 0;
+ s/^ +\%//;
+ $fixchr += s/(\s-c\s*)jessie(\s|$)/$1build$2/;
+ print or die $!;
+ END { $fixchr == 1 or die $fixchr; }
+ '
+)
+