update-janet

#!/bin/bash
LATEST_RELEASE=$(curl -L -s -H 'Accept: application/json' https://github.com/janet-lang/janet/releases/latest)
LATEST_VERSION=$(echo $LATEST_RELEASE | sed -e 's/.*"tag_name":"\([^"]*\)".*/\1/')
ARTIFACT_URL="https://github.com/janet-lang/janet/releases/download/$LATEST_VERSION/"
get_one_artifact() {
    echo "Getting Janet version $LATEST_VERSION, artifact $1..."
    curl -sL "$ARTIFACT_URL"/"$1" > janet/"$1"
}
get_one_artifact janet.c
get_one_artifact janet.h
get_one_artifact shell.c