From 76eb7774ac0a1f44ca6b66b9322870cba24a50a8 Mon Sep 17 00:00:00 2001
From: axetroy <axetroy.dev@gmail.com>
Date: Fri, 27 Nov 2020 10:30:30 +0800
Subject: [PATCH] feat: rename tag:N to @N

BREAKING CHANGE: rename

```diff
- tag:0~tag:1
+ @0~@1
```
---
 1_parser/parser.go      | 2 +-
 README.md               | 6 +++---
 cmd/whatchanged/main.go | 6 +++---
 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/1_parser/parser.go b/1_parser/parser.go
index 855faddc..628b1b14 100644
--- a/1_parser/parser.go
+++ b/1_parser/parser.go
@@ -25,7 +25,7 @@ type Scope struct {
 var (
 	regShortHash = regexp.MustCompile(`^[a-z\d]{7}$`)
 	regLongHash  = regexp.MustCompile(`^[a-z\d]{40}$`)
-	regTag       = regexp.MustCompile(`^tag:(\d+)$`)
+	regTag       = regexp.MustCompile(`^@(\d+)$`)
 )
 
 func getCommitFromHEAD(git *client.GitClient) (*object.Commit, error) {
diff --git a/README.md b/README.md
index bd156dab..9c279ec2 100644
--- a/README.md
+++ b/README.md
@@ -66,7 +66,7 @@ OPTIONS:
                 --fmt=md.
 
 EXAMPLES:
-  # generate changelog from HEAD to <latest version>. equivalent to 'whatchanged HEAD~tag:0'
+  # generate changelog from HEAD to <latest version>. equivalent to 'whatchanged HEAD~@0'
   $ whatchanged
 
   # generate changelog of the specified version
@@ -76,10 +76,10 @@ EXAMPLES:
   $ whatchanged v1.3.0~v1.2.0
 
   # generate changelog from HEAD to <Nth tag>
-  $ whatchanged ~tag:0
+  $ whatchanged ~@0
 
   # generate changelog from <0th tag> to <2th tag>
-  $ whatchanged tag:0~tag:2
+  $ whatchanged @0~@2
 
   # generate changelog from HEAD to specified version
   $ whatchanged HEAD~v1.3.0
diff --git a/cmd/whatchanged/main.go b/cmd/whatchanged/main.go
index 0f9edddb..e88aaa5a 100644
--- a/cmd/whatchanged/main.go
+++ b/cmd/whatchanged/main.go
@@ -58,7 +58,7 @@ OPTIONS:
                 --fmt=md.
 
 EXAMPLES:
-  # generate changelog from HEAD to <latest version>. equivalent to 'whatchanged HEAD~tag:0'
+  # generate changelog from HEAD to <latest version>. equivalent to 'whatchanged HEAD~@0'
   $ whatchanged
 
   # generate changelog of the specified version
@@ -68,10 +68,10 @@ EXAMPLES:
   $ whatchanged v1.3.0~v1.2.0
 
   # generate changelog from HEAD to <Nth tag>
-  $ whatchanged ~tag:0
+  $ whatchanged ~@0
 
   # generate changelog from <0th tag> to <2th tag>
-  $ whatchanged tag:0~tag:2
+  $ whatchanged @0~@2
 
   # generate changelog from HEAD to specified version
   $ whatchanged HEAD~v1.3.0