Liu Cong

Have a big lag from doc and implementing now, this should improve

For `*.ticat` or `*.tiflow` files, we could use `pack-subflow = true` to totally hide all ticat-related output: ``` # sample.tiflow help = just a sample flow = dummy : tidb.new...

The summay time of the failed `br.ssh.destory+restore` (inside the failed `selftest`) toke 34m6s, not equal to the summary duration below it. ``` 34m6s != 34s + 6s + 2m3s ```...

Here is the spec draft https://github.com/innerr/ticat/tree/main/doc/spec Might missed something.

@tisonkun you mean a BNF description about the grammar, maybe you could write one? (that could use for yacc later) from the usage doc there should be enough info to...

Related PR: #33

The gramma become more clear now: - Sequence is the most important `ticat cmd : cmd : ...` - Env setting `ticat {key=val} cmd` could be removed and instead by...

``` ticat display.stack.off : dummy : tidb.new ```

Fixed at #235

Fixed, related to the error