Daf

Daf (Hebrew דף — "sheet/page") is a simple console text editor written in C.

Themes

Three built-in 256-color themes: dark (default), light, and mono (the original reverse-video/underline look, for terminals or tastes that don't want real colors). Resolved in this order:

1. --theme=NAME on the command line
2. the DAF_THEME environment variable
3. theme=NAME in the config file ($XDG_CONFIG_HOME/daf/config, or ~/.config/daf/config) — # starts a comment
4. the build-time default (meson configure -Ddefault_theme=NAME)

The config file's own location can be changed at build time too, with meson configure -Dconfig_subpath=....

Custom themes

Any --theme=NAME (or DAF_THEME, or config theme=) that isn't dark/light/mono is looked up as a file at $XDG_CONFIG_HOME/daf/themes/NAME.conf (or ~/.config/daf/themes/NAME.conf — directory changeable at build time via meson configure -Dtheme_dir_subpath=...). It's key=value lines, each value a 256-color palette index as fg or fg,bg:

# ~/.config/daf/themes/mytheme.conf
base=dark          # start from a built-in theme; defaults to dark
selection=196,231   # override just the roles you want

Unset roles are inherited from base. Available roles: normal, gutter, gutter_current (the current line's line-number digit), selection, search_match, status_bar, tilde.

Building

Built with Meson:

meson setup build
ninja -C build

The binary is produced at build/src/daf.

Run the test suite with:

meson test -C build

Usage

build/src/daf [file]

If no file is given, the editor opens an empty, unnamed buffer.

Keybindings

Keys	Action
Arrows	Move the cursor
Shift + arrows/Home/End/PgUp/PgDn	Select text
Home	Smart jump to start of line
End	Jump to end of line
Tab / Shift-Tab	Insert tab / indent or dedent the selection
Ctrl-S	Save (prompts for a name if the file is new)
Ctrl-Q	Quit (press again to discard unsaved changes)
Ctrl-F	Find: all matches are highlighted with a count in the prompt; Ctrl-F again jumps to the next match (wraps around), Enter confirms, Esc cancels
Ctrl-G	Jump to a line number (Enter jumps, Esc cancels)
Ctrl-R	Search & replace: type the search text, Enter, then the replacement text, Enter to replace every match at once (Esc cancels either step)
Ctrl-Z / Ctrl-Y	Undo / redo
Ctrl-C / Ctrl-X	Copy / cut the selection (also pushed to the system clipboard)
Ctrl-V	Paste the internal clipboard
Backspace / Delete	Delete a character or the selection
Esc	Clear the selection

Enter also auto-indents: a new line inherits the current line's leading whitespace.

License

GNU GPL 3.0.