_seq(): add function to print numbers sequentially

FossilOrigin-Name: e512f7d12e12c16fe109cfdf642361bb46ba594273ecacd93531c0ddfb144a8e

1 files changed, 9 insertions, 0 deletions

diff --git a/src/cpt-lib.in b/src/cpt-lib.in
index 73e483c..5e5e7b4 100644
--- a/src/cpt-lib.in
+++ b/src/cpt-lib.in
@@ -45,6 +45,15 @@ trap_set() {
     esac
 }
 
+_seq() (
+    # Pure shell counter meant to be used in 'for' loops.
+    i=0 buf=''
+    while [ "$(( i += 1 ))" -le "$1" ]; do
+        buf="$buf $i "
+    done
+    printf '%s' "$buf"
+)
+
 _stat() (
     _user=; eval set -- "$(ls -ld "$1")"
     id -u "${_user:=$3}" >/dev/null 2>&1 || _user=root