denary 0.0.3

A curses-based text editor with syntax highlighting

Editor Documentation

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A modal terminal editor built on curses with a command-driven, event-based architecture and chunked text storage.

Includes syntax highlighting, multi-buffer management, registers and markers, undo/redo history, Git integration, async LSP support, subprocess execution, and HTTP requests.

Key Bindings

Core Editing

Shortcut	Action
Ctrl-S	Save file
Ctrl-Q	Quit editor
Ctrl-Y	Copy
Ctrl-X	Cut
Ctrl-U	Paste
Ctrl-E	Undo
Ctrl-O	Open file
Ctrl-D	Delete buffer
Ctrl-/	Search files
Ctrl-Z	Send editor to background

---

Buffer / File Management

Shortcut	Action
Ctrl-L	Buffer picker
Ctrl-P	Previous buffer
Ctrl-N	Next buffer
Ctrl-W	File explorer

---

Navigation & Searching

Shortcut	Action
Ctrl-F	Find
Ctrl-G	Go to line
Ctrl-Space	Show suggestions

---

Vim-Style Navigation

Shortcut	Action
Alt-H / J / K / L	Move cursor (vim style)
Alt-;	Toggle selection mode
Alt-I / Alt-O	Jump between punctuation
Alt-9 / Alt-0	Jump to start/end of line
Alt-↑ / Alt-↓	Scroll up/down
Alt-U	Paste system clipboard
Alt-N	Repeat last search
Alt-P	Reverse search repeat
Alt-M	Search word under cursor
Alt-W	File search

---

Normal Mode Marks & LSP

Shortcut	Action
m	Set marker
'	Save and use clipboard registers
`	Go to last buffer
K	Show LSP definition
q	Show line diagnostics
;	Go to LSP definition

---

Commands

Buffer Actions

Command	Description
h / help	Show help
q / quit	Exit editor
w / write	Save current buffer
ls / list	List open buffers
open	Open a file
bufnew	Create new buffer
nbuf / nextbuf / next / n	Next buffer
pbuf / prevbuf / prev / p	Previous buffer
delbuf / d	Delete buffer
ff	File search
ffr	New file search
fb	Buffer picker
ex	File explorer

---

UI & Behavior

Command	Description
themes	Change editor theme
ln	Toggle line numbers
gch	Toggle Git highlight
scrolloff <n>	Set scroll offset

---

Markers

Command	Description
m / marker	Add local/global marker
pm	Pick marker
dm	Delete markers in this buffer
dgm	Delete global markers
dpm	Delete specific marker
dam	Delete all markers

---

Text Utilities

Command	Description
clear_registers	Reset registers
reset_h_matches	Reset highlighting
replace	Replace text
comment	Toggle comment
upper / lower / capitalize	Change case
filetype <type>	Set syntax mode

---

Utilities

Command	Description
align	Align text by a delimiter (e.g. =, :, ,, `
column_edit	Insert, replace, or delete text within column ranges per line
date	Copy date
datetime	Copy current date & time
file_path	Copy current file path
json_format	Format JSON in selection or entire file
number_lines	Add line numbers to each line
rejoin	Split and rejoin selection or entire file using a delimiter
remove_empty_lines	Remove blank or whitespace-only lines
reverse_lines	Reverse the order of lines
shuffle_lines	Randomly shuffle lines
slugify	Convert text to URL-friendly slug format
sort / sort_r	Sort selection or entire file by lines (normal or reverse)
trim / trim_l / trim_r	Trim whitespace (both, left, or right) per line
unique_lines / dedup	Remove duplicate lines (keep first occurrence)
uuid	Copy random UUID
wrap	Wrap text to a specified width

---

Git Commands

Command	Description
git_status	Show Git status
git_diff	Show diff
git_commit_all	Commit all
git_blame	Show blame
git_log	Show history
git_refresh	Refresh state
git_hunk	Show previous version of changed code

---

LSP Commands

Command	Description
lsp_diagnostics	Show buffer diagnostics
lsp_hover	Show hover info
lsp_definition	Go to definition
lsp_refresh	Restart LSP for buffer
lsp_line_diagnostics	Show diagnostics for current line
lsp_clear_diagnostics	Clear diagnostics
clear_line_diag / clrld	Clear diagnostics for current line

---

AI Commands

Command	Description
ai	Send a custom instruction to the AI
ai_gen	Generate code at the cursor
ai_review	Review Git diff for issues
ai_commit_message	Generate a commit message from Git diff
ai_get	Retrieve AI result at the cursor
ai_show	Show AI completion picker
ai_remove	Cancel/remove AI completion at the cursor
change_ai_model	Change the active AI model

---

HTTP Request Execution

Select a block and run:

Command	Description
req	Make http request

Request Format

<HTTP_METHOD> <URL>
<Header>: <Value>
<Header>: <Value>

<Optional Body>

Examples

GET:

GET https://jsonplaceholder.typicode.com/todos/1
Accept: application/json

POST:

POST https://jsonplaceholder.typicode.com/posts
Content-Type: application/json

{
    "title": "Hello world",
    "body": "Testing request from editor",
    "userId": 1
}

Regex Replacement

Perform regex-based find and replace in the current buffer.

Command	Description
replace	Run a regex search and replace

---

Capture Groups

Parentheses create capture groups that can be reused in the replacement.

Syntax	Meaning
\0	Entire match
\1	First group
\2	Second group
\3	Third group

Example

Find

(\w+)\s+(\w+)

Replace

\2 \1

Result

hello world → world hello

---

Named Capture Groups

Groups can also be named.

(?P<name>pattern)

Named groups are referenced in the replacement using:

\g<name>

Example

Find

(?P<first>\w+)\s+(?P<last>\w+)

Replace

\g<last> \g<first>

Result

john doe → doe john

---

Case Transformations

The replacement string supports case modifiers.

Syntax	Effect
\U	Uppercase until \E
\L	Lowercase until \E
\u	Uppercase next character
\l	Lowercase next character
\E	End transformation

Example

Find

select

Replace

\U\0\E

Result

select → SELECT

---

Word Boundaries

\b matches the boundary between a word and a non-word character.

Example

Find

\bselect\b

Matches

select

Does not match

selected

---

Example: SQL Keyword Formatting

Find

\b(select|from|where|join|group\s+by|order\s+by)\b

Replace

\U\0\E

Result

select name from users where id = 1
↓
SELECT name FROM users WHERE id = 1