# 04 — Implement argv parsing (tokenize command strings)

**Status:** done
**Blocked by:** #01
**Blocks:** #06

Since we're not using a shell, we need our own command-line tokenizer to split a command string into `argv[]`.

## Must handle

- Simple whitespace splitting: `ls -l /tmp` → `["ls", "-l", "/tmp"]`
- Single-quoted strings: `echo 'hello world'` → `["echo", "hello world"]`
- Double-quoted strings with escapes: `echo "hello \"world\""`
- Backslash escaping outside quotes: `echo hello\ world`
- Mixed quoting: `echo "it's a test"`

## May handle (depending on #01 decisions)

- Variable/expression interpolation: `echo $HOME` or `echo ${dir}`
- Glob expansion: `ls *.lua` (could also defer to a later issue)

## Implementation

- Standalone C module, likely `lcmd_parse.c` or part of `lcmd.c`
- Returns a `char **argv` (NULL-terminated) + argc count
- Must handle memory allocation/cleanup