Enhanced TCL language support for Visual Studio Code with comprehensive syntax highlighting and language features.If you have any modification suggestions, please contact the author at email: [email protected].

Features

Syntax Highlighting

Comments: Single-line comments starting with #
Variables: Support for $var, ${var}, and array variables $arr(index)
Function Calls: Command substitution with [func args] syntax
Strings: Double-quoted strings with variable and command substitution
Numbers: Support for integers, floats, hexadecimal (0x), and octal (0o) numbers
Colors: Color value support for #RRGGBB and #RRGGBBAA formats
Braces: Content within {} braces
Namespaces: Namespace declarations and ns::func syntax
Keywords: TCL control structures and commands
Escapes: Escape for special characters such as \n, \t, and \"

Language Features

Bracket Matching: Automatic bracket pairing for {}, [], ()
Auto-closing: Automatic closing of brackets and quotes
Surrounding Pairs: Support for surrounding selections with brackets

Theme Support

Custom dark theme optimized for TCL syntax highlighting
Distinct colors for different syntax elements

Installation

From VS Code Marketplace

Open VS Code
Go to Extensions (Ctrl+Shift+X)
Search for "TCL Language Support"
Click Install

Manual Installation

Download the .vsix file from the releases page
In VS Code, go to Extensions
Click the "..." menu and select "Install from VSIX..."
Choose the downloaded file

Usage

Basic Usage

Open any .tcl file
The file will automatically be recognized as TCL
Syntax highlighting will be applied

Example TCL Code

# This is a comment
set var1 "Hello World"
set var2 123
set var3 3.14

# Function definition
proc myfunc {arg1 arg2} {
    return [expr {$arg1 + $arg2}]
}

# Function call
set result [myfunc 10 20]

# Namespace
namespace eval myns {
    proc test {} {
        puts "namespace test"
    }
}

# Variables in strings
set msg "Result: $result, Calc: [expr {$var2 + 10}]"

Supported Syntax Elements

Variables

$var - Simple variable
${var} - Braced variable
$arr(index) - Array variable

Function Calls

[func args] - Command substitution
[expr {$a + $b}] - Expression evaluation
Nested calls: [func1 [func2 arg]]

Numbers

123 - Integer
3.14 - Float
0xFF - Hexadecimal
0o755 - Octal
1.23e-4 - Scientific notation

Colors

#FFAA00 - RGB color value
#FFAA00FF - RGBA color value

Strings

"Hello World" - Double-quoted string
"Hello $name, your age is $age" - Variable substitution
"Result: [myfunc 10 20]" - Command substitution
"$var" - Variable interpolation

Keywords

if, else, switch, case, default, for, foreach, while, do, continue, break, return, proc, namespace, namespace eval, variable, array etc.

Escapes

\n - Newline
\t - Tab
\" - Double-quote

Configuration

Theme Selection

Open VS Code Settings (Ctrl+,)
Search for "Color Theme"
Select "TCL Theme" from the dropdown

Language Configuration

The extension provides language configuration for:

Comments
Bracket matching
Auto-closing pairs
Surrounding pairs

Development

Building from Source

Clone the repository
Install dependencies: npm install
Build the extension: npm run build

Testing

Open the project in VS Code
Press F5 to launch extension development host
Open a .tcl file to test syntax highlighting

Contributing

Fork the repository
Create a feature branch
Make your changes
Test thoroughly
Submit a pull request

Issues

If you encounter any issues or have feature requests, please:

Check existing issues first
Create a new issue with detailed description
Include sample code that reproduces the problem

License

This extension is licensed under the MIT License. See the LICENSE file for details.

Changelog

0.0.1

Initial release
Basic TCL syntax highlighting
Support for variables, functions, strings, numbers
Custom theme support
Language configuration

Acknowledgments

TCL/Tk community for language specifications
VS Code team for the excellent extension API
Contributors and users for feedback and suggestions

TCL Language Support Of WangXin