Add simple syntax highlighting

config/config.yml

@@ -6,5 +6,5 @@ selected_style_fallback: "default-fallback" # Style for 8-color capable terminal
 show_top_menu: true
 show_line_index: true
 extend_line_index: false # Extend line index to the bottom of the screen
-buffer_info_message: "File: %f Cursor: (%x, %y, %p) Chars: %c"
+buffer_info_message: "File: %f, Filetype: %t, Cursor: (%x, %y, %p), Chars: %c"
 tab_indentation: 4 # Length of tab characters

config/styles/classic.yml

@@ -19,3 +19,11 @@ colors:
   message_bar_fg: "black" # Message bar text color
   input_bar_bg: "245" # Input bar background color
   input_bar_fg: "black" # Input bar text color
+
+  # Syntax highlighting
+  syntax_comment: "darkgray"
+  syntax_keyword: "lightgreen"
+  syntax_identifier: "yellow"
+  syntax_constant: "purple"
+  syntax_variable: "yellow"
+  syntax_string: "purple"

config/styles/default.yml

@@ -5,6 +5,7 @@ style_type: "256-color"
 
 # Colors
 colors:
+  # Main colors
   buffer_area_bg: "234" # Buffer area background color
   buffer_area_fg: "white" # Buffer area text color
   buffer_area_sel: "243" # Buffer area selected text and cursor background color
@@ -18,4 +19,12 @@ colors:
   message_bar_bg: "236" # Message bar background color
   message_bar_fg: "white" # Message bar text color
   input_bar_bg: "236" # Input bar background color
-  input_bar_fg: "white" # Input bar text color
+  input_bar_fg: "white" # Input bar text color
+
+  # Syntax highlighting
+  syntax_comment: "gray"
+  syntax_keyword: "gold"
+  syntax_identifier: "purple"
+  syntax_constant: "teal"
+  syntax_variable: "purple"
+  syntax_string: "blue"

config/syntax/yaml.yml

@@ -0,0 +1,15 @@
+filetype: yaml
+filenames: ".y[a]?ml$"
+
+rules:
+  - type: string # Strings
+    regex: '(["''])(.*?)(["''])'
+  - type: comment
+    regex: "#.*"
+  - type: identifier # Keys
+    regex: '^[[:blank:]]*(-.)?([a-z0-9\._\-])+:'
+    multiline: true
+  - type: constant # Number values
+    regex: '\d+(\.\d+)?'
+  - type: constant # True/false values
+    regex: '\b(YES|yes|Y|y|ON|on|TRUE|True|true|NO|no|N|n|OFF|off|FALSE|False|false)\b'