bash_unit -v will display bash_unit current version.

Version information is extracted from VERSION variable wich
is set at git checkout time with :

Author: pgrange

.gitattributes

@@ -0,0 +1 @@
+bash_unit filter=insert_tag

bash_unit

@@ -16,6 +16,8 @@
 #
 #  https://github.com/pgrange/bash_unit
 
+VERSION=snapshot
+
 ESCAPE=$(printf "\033")
 NOCOLOR="${ESCAPE}[0m"
 RED="${ESCAPE}[91m"
@@ -152,10 +154,11 @@ run_test() {
 
 usage() {
   echo "$1" >&2
-  echo "$0 [-f <output format<] [-p <pattern1>] [-p <pattern2>]... <test_file1> <test_file2>..." >&2
+  echo "$0 [-f <output format>] [-p <pattern1>] [-p <pattern2>]... <test_file1> <test_file2>..." >&2
   echo >&2
   echo "Runs tests in test files that match <pattern>s" >&2
   echo "<output format> is optionnal only supported value is tap" >&2
+  echo "-v to get current version information" >&2
   echo "See https://github.com/pgrange/bash_unit" >&2
   exit 1
 }
@@ -263,7 +266,7 @@ tap_format() {
 output_format=text
 test_pattern=""
 separator=""
-while getopts "p:f:" option
+while getopts "vp:f:" option
 do
   case "$option" in
     p)
@@ -273,6 +276,10 @@ do
     f)
       output_format="${OPTARG}"
       ;;
+    v)
+      echo "bash_unit $VERSION"
+      exit
+      ;;
     ?|:)
       usage
       ;;