codejump (Micro editor plugin)

codejump is a Micro editor plugin that provides fast navigation through source code by jumping between:

• Functions
• Classes
• Language-specific blocks
• Markdown headings

It is designed to mimic "structural navigation" features found in IDEs, but keep things lightweight and regex-based.

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Features

Code navigation

Jump between definitions in multiple languages:

• Python: def, class
• Go: func
• Rust: fn, impl, trait
• Pascal: function, procedure, constructor, destructor
• C/C++: function and class-like declarations
• Lua: function
• JavaScript / Java (basic heuristics)
• Markdown: headings (# through ######)

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Commands

Command	Action
codejump	Jump to any symbol using external analyzer + fzf F4
defjumpdown	Jump to next function/block CTRL+Down
defjumpup	Jump to previous function/block CTRL+Up

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Default keybindings

• F4 → codejump
• Ctrl + Down → next function/block
• Ctrl + Up → previous function/block

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Installation

Manual install

Clone into Micro plugins directory:

git clone https://github.com/xqtr/micro-codejump ~/.config/micro/plug/codejump

Restart Micro.

How it works

1. Structural navigation (Lua-based)

The plugin scans the current buffer line-by-line using regex patterns to detect:

• function definitions
• class definitions
• markdown headings

It then moves the cursor to the next or previous match.

2. FZF-based jump (external analyzer)

The codejump command uses an external Python script + fzf to:

• index the current file
• allow fuzzy selection
• jump directly to selected line

Configuration

The analyzer path is computed automatically:

~/.config/micro/plug/codejump/code_analyzer.py

Make sure:

• fzf is installed
• python3 is available
• the analyzer script exists and is executable

Supported languages

• Python
• Go
• Rust
• Pascal
• C/C++
• Lua Basic
• Markdown

Limitations

• Uses regex, not a real parser (no AST awareness)
• C/C++ detection is heuristic and may produce false positives
• Complex language constructs (nested functions, macros) may not be detected
• Performance depends on file size (linear scan)

Motivation

• Micro is lightweight, but lacks IDE-style code structure navigation.

This plugin adds:

• fast jumping between logical blocks
• minimal dependencies
• extensibility via regex patterns
• optional fuzzy navigation via fzf

License

MIT

Author

Based on ideas from Tero Karvinen’s micro-jump plugin Extended to be more visible appealed (fzf) and added functions to navigate via key bindinds, between functions.

XQTR // cp737.net