add rc/yaml.kak

rc/yaml.kak

@@ -0,0 +1,69 @@
+# http://yaml.org
+# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
+
+# Detection
+# ‾‾‾‾‾‾‾‾‾
+
+hook global BufSetOption mimetype=text/x-yaml %{
+    set buffer filetype yaml
+}
+
+hook global BufCreate .*[.](yaml) %{
+    set buffer filetype yaml
+}
+
+# Highlighters
+# ‾‾‾‾‾‾‾‾‾‾‾‾
+
+addhl -group / multi_region -default code yaml \
+    double_string '"' (?<!\\)(\\\\)*"       '' \
+    single_string "'" "'"                   '' \
+    comment       '#' '$'                   ''
+
+addhl -group /yaml/double_string fill string
+addhl -group /yaml/single_string fill string
+addhl -group /yaml/comment       fill comment
+
+addhl -group /yaml/code regex ^(---|\.\.\.)$ 0:macro
+addhl -group /yaml/code regex ^(\h*:\w*) 0:keyword
+addhl -group /yaml/code regex \<(true|false|null)\> 0:value
+
+# Commands
+# ‾‾‾‾‾‾‾‾
+
+def -hidden _yaml_filter_around_selections %{
+    eval -draft -itersel %{
+        exec <a-x>
+        # remove trailing white spaces
+        try %{ exec -draft s \h+$ <ret> d }
+    }
+}
+
+def -hidden _yaml_indent_on_new_line %{
+    eval -draft -itersel %{
+        # preserve previous line indent
+        try %{ exec -draft <space> K <a-&> }
+        # filter previous line
+        try %{ exec -draft k : _yaml_filter_around_selections <ret> }
+        # copy '#' comment prefix and following white spaces
+        try %{ exec -draft k x s ^\h*\K#\h* <ret> y j p }
+        # indent after :
+        try %{ exec -draft <space> k x <a-k> :$ <ret> j <a-gt> }
+    }
+}
+
+# Initialization
+# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
+
+hook global WinSetOption filetype=yaml %{
+    addhl ref yaml
+
+    hook window InsertEnd  .* -group yaml-hooks  _yaml_filter_around_selections
+    hook window InsertChar \n -group yaml-indent _yaml_indent_on_new_line
+}
+
+hook global WinSetOption filetype=(?!yaml).* %{
+    rmhl yaml
+    rmhooks window yaml-indent
+    rmhooks window yaml-hooks
+}