\u00FF is a legal escape sequence but \unicode is not
can't embed languages if syntax is restricted to legal ES escape sequences
function latex(strs) {
// ...
}
let doc = latex`
\newcommand{\fun}{\textbf{Fun!}}
\newcommand{\unicode}{\textbf{Unicode!}}
\newcommand{\xerxes}{\textbf{King!}}
Breve over the h goes \u{h}ere
`;
function latex(strs) {
// ...
}
let doc = latex`
\newcommand{\fun}{\textbf{Fun!}}
`;
Proposal:
Remove escape sequence restriction
Cooked Values Option 1
How should we handle cooked values with illegal escape sequences?
Cook valid escape sequences and leave invalid escape sequences raw
Seems like a footgun
Could be surprising that \unicode is literal but \uface is cooked to 龜
function tag(strs) {
strs[0] === "\\unicode and U"
strs.raw[0] === "\\unicode and \\u{55}";
}
tag`\unicode and \u{55}`
Cooked Values Option 2
How should we handle cooked values with illegal escape sequences?
Set cooked values with illegal escape sequences to undefined
Programmers still have access to raw
function tag(strs) {
strs[0] === undefined
strs.raw[0] === "\\unicode and \\u{55}";
}
tag`\unicode and \u{55}`
