edit
Edit is an implementation of the Acme/Sam command language
usage
ed, _ := text.Open(text.NewBuffer())
ed.Insert([]byte("Removing vowels isnt the best way to name things"), 0)
cmd, _ := edit.Compile(",x,[aeiou],d")
cmd.Run(ed)
fmt.Printf("%s\n", ed.Bytes())
// Rmvng vwls snt th bst wy t nm thngs
example
See example/example.go
reference
Rob Pike pioneered structural regular expressions in the 1980s. The original implementations can be found in his Sam and Acme text editors.
http://doc.cat-v.org/bell_labs/structural_regexps/
http://doc.cat-v.org/bell_labs/sam_lang_tutorial/
appendix
This implementation now runs 10-1000 times faster
Benchmark before coalescing (2017.09.17)
goos: windows
goarch: amd64
BenchmarkChange128KBto64KB-4 1 3531749200 ns/op
BenchmarkChange128KBto128KB-4 1 3784740700 ns/op
BenchmarkChange128KBto128KBNest4x2x1-4 1 3642752800 ns/op
BenchmarkChange128KBto128KBx16x4x1-4 1 3589181900 ns/op
After coalescing (current)
goos: windows
goarch: amd64
pkg: github.com/as/edit
BenchmarkChange128KBto64KB-4 2 530753100 ns/op
BenchmarkChange128KBto128KB-4 200 6529711 ns/op
BenchmarkChange128KBto128KBNest4x2x1-4 200 6450888 ns/op
BenchmarkChange128KBto128KBx16x4x1-4 200 6333687 ns/op
BenchmarkDelete128KB-4 200000 11720 ns/op
BenchmarkDelete128KBx64-4 20 93447760 ns/op
BenchmarkDelete128KBx8-4 20 68008640 ns/op
BenchmarkDelete128KBx1-4 5 263001000 ns/op
BenchmarkDelete256KBx1-4 2 519648200 ns/op
BenchmarkDelete512KBx1-4 1 1032597800 ns/op