nik/lush

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Cormac Shannon db6f39a2a4 Add project issues for lush (Lua + shell) features

Defines syntax decisions and implementation plan across 7 issues:
- backtick command execution returning {code, stdout, stderr}
- ${expr} interpolation in backticks
- $SIGIL env var read/write
- argv parsing, piping, and redirection (future)

2026-02-18 19:08:59 +00:00

848 B

Raw Blame History

02 — Complete backtick command lexing and parsing

Status: open 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