Add filetype detection for eyaml files (#12659)

[Christian Brabandt]

Add filetype detection for eyaml files (#12659)

Commit: https://github.com/vim/vim/commit/b69b9d5e175351c9a25507139954f6211f37fdd9
Author: Max Gautier <m...@max.gautier.name>
Date: Wed Aug 9 17:18:36 2023 +0200

Add filetype detection for eyaml files (https://github.com/vim/vim/issues/12659)

https://github.com/voxpupuli/hiera-eyaml/ uses and produces the eyaml
format, which is simply yaml with some encrypted values.

It's convenient to edit the file without decrypting when not touching
encrypted values (or when you don't have access to the decryption key),
which is why vim should treat those files as yaml files.

diff --git a/runtime/filetype.vim b/runtime/filetype.vim
index 6d2d55e3c..4808a56d8 100644
--- a/runtime/filetype.vim
+++ b/runtime/filetype.vim
@@ -2544,7 +2544,7 @@ au BufNewFile,BufRead *.yy,*.yxx,*.y++ setf yacc
au BufNewFile,BufRead *.y call dist#ft#FTy()

" Yaml
-au BufNewFile,BufRead *.yaml,*.yml setf yaml
+au BufNewFile,BufRead *.yaml,*.yml,*.eyaml setf yaml

" Raml
au BufNewFile,BufRead *.raml setf raml
diff --git a/src/testdir/test_filetype.vim b/src/testdir/test_filetype.vim
index a044b6292..7125360da 100644
--- a/src/testdir/test_filetype.vim
+++ b/src/testdir/test_filetype.vim
@@ -799,7 +799,7 @@ def s:GetFilenameChecks(): dict<list<string>>
xsd: ['file.xsd'],
xslt: ['file.xsl', 'file.xslt'],
yacc: ['file.yy', 'file.yxx', 'file.y++'],
- yaml: ['file.yaml', 'file.yml', '.clangd', '.clang-format', '.clang-tidy'],
+ yaml: ['file.yaml', 'file.yml', 'file.eyaml', '.clangd', '.clang-format', '.clang-tidy'],
yang: ['file.yang'],
yuck: ['file.yuck'],
z8a: ['file.z8a'],