A codegolf language - stack-based, small executable.

Tilde is in early development, and breaking changes in the language or code are likely. That is, if the project doesn't just die altogether.

Tilde is stack-based. The initial stack contains one vector, with a string value for each line of stdin in reverse.

To encode instructions as compactly as possible, each 'letter' is a half byte, so there are 16 only. But they can be combined in different ways, so in practice many instructions will be 1 byte, 1.5 byte or even longer

To build the executable:

TILDE_TARGET="$(rustc -vV | grep host | sed -E 's/.*: (.*)/\1/')"
RUSTFLAGS="-C target-cpu=native" cargo +nightly build -Z build-std=std,panic_abort --target "$TILDE_TARGET" --no-default-features --release

The current goal is having only a single dependency (regex) and keep the binary size small, preferably under 0.5 MB.

A dictionary is used for storing strings compactly (mapping positive ints to snippets by position).

The current dictionary is experimental and may change (breaking existing programs). Once stabilized the dictionary will only grow.

Sources for the (English) dictionary: ps-kostikov, wikipedia, stackoverflow, me.