proselint for mail files (#1037)

Add proselint for mail files

3 files changed, 11 insertions, 0 deletions

diff --git a/README.md b/README.md
index e803b907..16dc22fb 100644
--- a/README.md
+++ b/README.md
@@ -109,6 +109,7 @@ formatting.
 | LaTeX | [chktex](http://www.nongnu.org/chktex/), [lacheck](https://www.ctan.org/pkg/lacheck), [proselint](http://proselint.com/) |
 | LLVM | [llc](https://llvm.org/docs/CommandGuide/llc.html) |
 | Lua | [luacheck](https://github.com/mpeterv/luacheck) |
+| Mail | [proselint](http://proselint.com/) |
 | Markdown | [mdl](https://github.com/mivok/markdownlint), [proselint](http://proselint.com/), [vale](https://github.com/ValeLint/vale), [remark-lint](https://github.com/wooorm/remark-lint) !! |
 | MATLAB | [mlint](https://www.mathworks.com/help/matlab/ref/mlint.html) |
 | Nim | [nim check](https://nim-lang.org/docs/nimc.html) !! |
diff --git a/ale_linters/mail/proselint.vim b/ale_linters/mail/proselint.vim
new file mode 100644
index 00000000..82c8d1f8
--- /dev/null
+++ b/ale_linters/mail/proselint.vim
@@ -0,0 +1,9 @@
+" Author: Daniel M. Capella https://github.com/polyzen
+" Description: proselint for mail files
+
+call ale#linter#Define('mail', {
+\   'name': 'proselint',
+\   'executable': 'proselint',
+\   'command': 'proselint %t',
+\   'callback': 'ale#handlers#unix#HandleAsWarning',
+\})
diff --git a/doc/ale.txt b/doc/ale.txt
index e0e85df8..68e71a66 100644
--- a/doc/ale.txt
+++ b/doc/ale.txt
@@ -266,6 +266,7 @@ Notes:
 * LaTeX (tex): `chktex`, `lacheck`, `proselint`
 * LLVM: `llc`
 * Lua: `luacheck`
+* Mail: `proselint`
 * Markdown: `mdl`, `proselint`, `vale`, `remark-lint`
 * MATLAB: `mlint`
 * Nim: `nim check`!!