Reference

Keybindings

Key	Action
Arrow keys	Move the cursor
`Page Up` / `Page Down`	Scroll by one screen
`Home` / `End`	Jump to the start or end of the line
`Enter`	Insert a new line
`Backspace`, `Ctrl+H`, `Delete`	Delete a character
`Ctrl+S`	Save the file
`Ctrl+F`	Incremental search (arrows navigate matches, `Esc` cancels, `Enter` accepts)
`Ctrl+Q`	Quit; requires 3 presses when the buffer has unsaved changes

Defined in include/common.h:

Constant	Value	Meaning
`TAB_STOP`	`8`	Tabs render on an 8-column grid via the render index (`rx`)
`B_QUIT_TIMES`	`3`	Presses of `Ctrl+Q` required to discard unsaved changes
`B_TEXTEDITOR_VERSION`	`0.0.1`	Version string shown in the welcome message

File	Responsibility
`src/main.c`	Entry point; initializes the editor and runs the input loop
`src/terminal.c`	Raw mode setup and teardown (`termios`), key reading, window size
`src/input.c`	Keypress dispatch and cursor movement
`src/output.c`	Screen rendering via the append buffer (`abuf`); single-`write()` refresh
`src/row.c`	Row operations: insert, delete, append, and the `cx`/`rx` conversion
`src/editor.c`	High-level editing operations on the buffer
`src/file_io.c`	Opening files into rows and serializing rows back to disk
`src/find.c`	Incremental search with directional navigation
`src/data.c`	Global editor state definition

Command	Effect
`make`	Compiles `src/*.c` into `obj/` and links `B-textEditor`
`make clean`	Removes `obj/` and the executable

Compiler flags: -Wall -Wextra -pedantic -std=c99 -Iinclude.