HexEditor (ncurses TUI)

A Vim-inspired terminal hex editor written in C with ncurses.

It supports modal editing, hex counts, architectural-word motions, split panes, tabs, marks, macros, command mode, and scripted startup input.

Build

• make
• Binary: ./hexeditor

Run

• Open a file: ./hexeditor <file>
• Launch unnamed buffer: ./hexeditor
• Script startup keys: ./hexeditor -c '0x40Gi010203' <file>

Highlights

• Normal/insert/visual modal editing.
• Hex + ASCII edit surfaces (toggle: Ctrl-W T).
• Splits: :sp, :vsp, navigation with Ctrl-W h/j/k/l.
• Tabs: :tabnew, :tabnext, :tabprev, :tabclose, and gt/gT.
• Marks/jumps: ma, 'a, `a, '', ``.
• Operators/motions: d/c/y + motions, counts, visual selections.
• Macros: qa...q, @a, counts with replay.
• Search: /, n, N with text/hex patterns.
• Ex commands: :w, :w <path>, :q, :q!, :x, :fill, :set wordbytes=<n>, :s/old/new/g.

Saving

• Named buffer: :w saves to current file.
• Unnamed buffer: use :w <path> to assign filename and save.

Tests

• Run: make test
• Includes scripted regressions for insert/open/substitute, visual edits, marks, macros, ASCII-plane ops, and save behavior.

Manual

• Full reference: HEXEDITOR_MANUAL.html
• Open locally: xdg-open HEXEDITOR_MANUAL.html