# 02 — Complete backtick command lexing and parsing

**Status:** done
**Blocked by:** #01
**Blocks:** #03

Backtick lexing is partially implemented:
- `llex.c`: TK_COMMAND token lexed via `read_string()` on backtick
- `llex.h`: TK_COMMAND enum added
- `lparser.c`: TK_COMMAND handled in `simpleexp()` (as string) and `suffixedexp()` (as func args)

## Remaining work

- Verify the lexer handles edge cases (escaped backticks, newlines, nested quotes)
- Parser must emit code that produces a result table (`{code, stdout, stderr}`) at runtime, not just a string literal
- May need a new opcode (e.g. `OP_COMMAND`) or compile as a call to a built-in execution function
- Add string interpolation inside backticks if decided in #01

## Files touched

- `llex.c` / `llex.h`
- `lparser.c`
- Possibly `lopcodes.h` / `lopcodes.c` if adding a new opcode