add redpen as text linter

README.md

@@ -149,7 +149,7 @@ formatting.
 | Tcl | [nagelfar](http://nagelfar.sourceforge.net) !! |
 | Terraform | [tflint](https://github.com/wata727/tflint) |
 | Texinfo | [proselint](http://proselint.com/), [write-good](https://github.com/btford/write-good)|
-| Text^ | [proselint](http://proselint.com/), [vale](https://github.com/ValeLint/vale), [write-good](https://github.com/btford/write-good) |
+| Text^ | [proselint](http://proselint.com/), [vale](https://github.com/ValeLint/vale), [write-good](https://github.com/btford/write-good), [redpen](http://redpen.cc/) |
 | Thrift | [thrift](http://thrift.apache.org/) |
 | TypeScript | [eslint](http://eslint.org/), [prettier](https://github.com/prettier/prettier), [tslint](https://github.com/palantir/tslint), tsserver, typecheck |
 | Verilog | [iverilog](https://github.com/steveicarus/iverilog), [verilator](http://www.veripool.org/projects/verilator/wiki/Intro) |

ale_linters/text/redpen.vim

@@ -0,0 +1,9 @@
+" Author: rhysd https://rhysd.github.io
+" Description: Redpen, a proofreading tool (http://redpen.cc)
+
+call ale#linter#Define('text', {
+\   'name': 'redpen',
+\   'executable': 'redpen',
+\   'command': 'redpen -f plain -r json %t',
+\   'callback': 'ale#handlers#redpen#HandleRedpenOutput',
+\})

doc/ale.txt

@@ -341,7 +341,7 @@ Notes:
 * Tcl: `nagelfar`!!
 * Terraform: `tflint`
 * Texinfo: `proselint`, `write-good`
-* Text^: `proselint`, `vale`, `write-good`
+* Text^: `proselint`, `vale`, `write-good`, `redpen`
 * Thrift: `thrift`
 * TypeScript: `eslint`, `prettier`, `tslint`, `tsserver`, `typecheck`
 * Verilog: `iverilog`, `verilator`