jl(9)

SYNOPSIS

j, jl - Julia files

FILES

hkjulia.emf - Julia hook definition
julia.eaf - Julia abbreviation file
julia.etf - Julia template file.

EXTENSIONS

.jl - Julia file

DESCRIPTION

The Julia file type editing provides simple hilighting of Julia files, abbreviations, folding and an item-list.

Abbreviations


The installation comes with a default abbreviation file for Julia file editing which can be used by writing short abbreviations like "if", "el" (else) or "fu" (function) - and then pressing the key-binding for the expand-abbrev-handle(3) command. The list of abbreviations can be used interactively in the GUI version of MicroEmacs using the abbrev-list(3) command.

Auto Layout


The indentation mechanism is enabled which performs automatic layout of the text. restyle-region(3) and restyle-buffer(3) are available to reformat (re-layout) selected sections of the buffer, or the whole buffer, respectively.

Folding and Information Hiding


Generic folding is enabled within the Julia file. The folds occur about functions, macros and structs as long as these declarations are on one line and ending at a line starting with the end keyword. collapse-all(3) (un)folds all regions in the file, collapse-current(3) (un)folds the current region.

Navigation via Item List


The Julia mode offers beside folding as well support for displaying an outline of the functions, macros and structs for easy navigation using the item-list(3) command.

Short Cuts


The short cut keys used within the buffer are:-

C-c C-c - Comment out the current line.
C-c C-d - Uncomment the current line.
C-c C-e - Comment to the end of the line with stars (#).
A-C-i - Restyle the current region.
esc q - Format a comment.
esc o - Format a comment.
f2 - (Un)fold the current region.
C-f2 - (Un)fold all regions.
f6 - List items.
esc f6 - Close item list.

Executing, Formatting and Linting Julia Code


The Julia file hook supports the file-exec(3), the file-format(3) and the file-lint(3) macros. The Julia packages which are currently supported for formatting and linting are "Runic" and "ReLint". The procedure to install the "runic" script as a standalone application on a Unix system is like this:

# Download the script into ~/.local/bin 
curl -fsSL -o ~/.local/bin/runic https://raw.githubusercontent.com/fredrikekre/Runic.jl/refs/heads/master/bin/runic 
# Make the script executable 
chmod +x ~/.local/bin/runic 
# Verify the installation 
runic --version 

The procedure to install the "ReLint" Julia linter in the julia shell is like this:

import Pkg 
Pkg.add(url="https://github.com/RelationalAI-oss/ReLint.jl") 

NOTES

The hilighting and other features are typically extended using a file myjl.emf.

BUGS

None reported so far.

SEE ALSO

abbrev-list(3), collapse-all(3), collapse-current(3), expand-abbrev-handle(3), file-exec(3), file-format(3), file-lint(3), item-list(3), restyle-buffer(3), restyle-region(3), time(2m).

Supported File Types

(c) Copyright JASSPA 2025
Last Modified: 2025/08/28
Generated On: 2025/09/29