mktoc

Markdown Table of Content generator

• About
• Installation
  • Cargo
  • Binary
• Usage
  • Update Markdown file
  • Command line
  • Environment configuration
• Auto-run with VSCode
• Performance
• License

About

mktoc parses markdown files and generates a Table Of Content linking all headlines up to heading level 6 deep, or as specified by command line arguments. A start depth and maximum depth can be specified.

Installation

mktoc can be installed using Cargo, the Rust package manager.

Cargo

$ cargo install mktoc

Update

$ cargo install --force mktoc

Binary

Binaries are actually not available yet. If you know how releasing binaries with Rust can be implemented, please let me know!

Usage

Update Markdown file

Add the following HTML comment into the Markdown file where the Table of Contents should be rendered.

<!-- BEGIN mktoc -->
<!-- END mktoc -->

Everything between those comments will be replaced!

Command line

Specify --stdout or -s to output generated content to stdout instead of overwriting file. By default the specified file will be overwritten.

# mktoc [FLAGS] [OPTIONS] [file] 
$ mktoc -s README.md
$ mktoc -m 2 -M 4 README.md
$ mktoc

If no arguments are given the default or configured (via environment) values are used.

See mktoc --help for list of all arguments and flags.

mktoc

USAGE:
mktoc [FLAGS] [OPTIONS] [file]

FLAGS:
-h, --help       Prints help information
-s, --stdout     If set will output to stdout instead of replacing content in file
-V, --version    Prints version information

OPTIONS:
-M, --max-depth <max-depth>    Maximum heading level [env: MKTOC_MAX_DEPTH=]  [default: 6]
-m, --min-depth <min-depth>    Minimum heading level [env: MKTOC_MIN_DEPTH=2]  [default: 1]

ARGS:
<file>     [default: README.md]

Environment configuration

mktoc can be configured with environment variables, namely:

• MKTOC_MIN_DEPTH equal to -m
• MKTOC_MAX_DEPTH equal to -M

Place these variables in a shell environment file such as ~/.bashrc or ~/.zshrc, then just run mktoc without -m and -M

# The following in ~/.bashrc configures mktoc to render headings from level 2 to
# level 4
# 
# MKTOC_MIN_DEPTH=2
# MKTOC_MAX_DEPTH=4

$ mktoc README.md

Auto-run with VSCode

For VSCode the Run on save extension can be used to trigger mktoc.

Install the extension and then add the following config to workspace or user settings.json.

"emeraldwalk.runonsave": {
    "commands": [
        {
            "match": "\\.md$",
            "cmd": "mktoc ${file}"
        }
    ]
}

This will run the command for every markdown file on safe. If there is no mktoc comment in the Markdown file nothing happens.

Performance

mktoc is fast but can probably be even faster! Pull Requests and bug reports are appreciated!

License

MIT, see LICENSE file.