bootstrap.ci: flexibilize option -R

When -R is given, accept indication of -rc resp. ~rc version strings in git describe's output.
2018-05-13 13:20:01 +02:00 · 2018-05-13 13:20:01 +02:00 · e4cab31763
parent a6b596d09a
commit e4cab31763
1 changed files with 1 additions and 1 deletions
--- a/bootstrap.ci
+++ b/bootstrap.ci
@ -39,7 +39,7 @@ do
             REVISION=$OPTARG
             ;;
         R)
-             REVISION=`git describe | perl -ne 'print $1 if /^[\.0-9]*-([0-9]*)-g[a-z0-9]*$/;'`
+             REVISION=`git describe | perl -ne 'print $1 if /^[\.0-9]*([-~]rc[0-9]+)?-([0-9]*)-g[a-z0-9]*$/;'`
             ;;
         ?)
             usage