block-quotes code regexp for SGR (github.com/foize/go.sgr)

sgrBlockquotesRegexp.go

Regexp: `(?:(?:^\[?\[([a-zA-Z0-9\- ]+)\])|([.\n\r]+))*`
Input: "[red] blabla [[ escaped? [bla-fd] ]] escaped?"
Output(fmt %#v): []string{"[red]", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", ""}
Expected: []string{"[red]", " blabla [[ escaped? ", "[bla-fd]", " ]] escaped?"}


Regexp: \[([^\]]+)\]
Input: "[red] blabla [[ escaped? [bla-fd] ]] escaped?"
Output(fmt %#v): [][]int{[]int{0, 5}, []int{13, 33}}
Expected: [][]int{[]int{0,5}, []int{25, 8}}