diff --git a/README.md b/README.md
index b9eb38e..0d8741c 100644
--- a/README.md
+++ b/README.md
@@ -82,6 +82,7 @@ $ janus version -format='v%M.%m.%P+%C-%S'
 %B, _B - hybrid patch version: `(%P * 100) + %C`
 %C, _C - commit count since last tag
 %S, _S - HEAD sha1 (first 7 characters)
+%T, _T - full tag string
 ```
 _Note_: you may use either `%M` or `_M` syntax to interpolate version variables, since escaping `%` in batch scripts is rather tricky.
 
diff --git a/gitvv/gitvv.go b/gitvv/gitvv.go
index 67fa32e..47254fe 100644
--- a/gitvv/gitvv.go
+++ b/gitvv/gitvv.go
@@ -116,8 +116,12 @@ func getLastTag(dir string) (string, bool) {
 
 // Assumes using semver format for tags, eg v3.5.0 or 3.4.0
 func parseSemverFromTag(s string) []string {
-	tag := strings.TrimPrefix(s, "v")
+	re := regexp.MustCompile(`\d*\.\d*\.\d*`)
+	tag := re.FindStringSubmatch(s)[0]
 	vers := strings.Split(tag, ".")
+	if len(vers) != 3 {
+		return nil
+	}
 	return vers
 }
 
@@ -284,6 +288,8 @@ func GetVersion(format, dir string) string {
 		out = strings.Replace(out, "%B", "?", -1)
 		out = strings.Replace(out, "_B", "?", -1)
 	}
+	out = strings.Replace(out, "_T", lastTag, -1)
+	out = strings.Replace(out, "%T", lastTag, -1)
 
 	return out
 }
diff --git a/gitvv/gitvv_test.go b/gitvv/gitvv_test.go
index 1da01f7..10125b9 100644
--- a/gitvv/gitvv_test.go
+++ b/gitvv/gitvv_test.go
@@ -249,6 +249,10 @@ func TestGetVersion(t *testing.T) {
 		{onTagDir, "v%M.%m.%P", "v0.0.1"},
 		{aboveTagDir, "v%M.%m.%P", "v0.0.1"},
 
+		{noTagsDir, "%T", ""},
+		{onTagDir, "%T-stable", "v0.0.1-stable"},
+		{aboveTagDir, "%T-unstable", "v0.0.1-unstable"},
+
 		{noTagsDir, "%C", "1"},
 		{onTagDir, "%C", "0"},
 		{aboveTagDir, "%C", "1"},
@@ -331,6 +335,10 @@ func Test_parseSemverFromTag(t *testing.T) {
 	}{
 		{"v0.1.7", []string{"0", "1", "7"}},
 		{"0.1.7", []string{"0", "1", "7"}},
+		{"v0.1.7-stable", []string{"0", "1", "7"}},
+		{"vv0.1.7.very-unstable", []string{"0", "1", "7"}},
+		{"V0.1.7.very...unstable", []string{"0", "1", "7"}},
+		{"1.0.is-this-a-feature-or-bug?", []string{"1","0"}}, // PTAL IDK.
 	}
 
 	for _, tt := range table {