concat_interpolation

A .. chain that joins literals and values.

Flux. A chain such as "Hello " .. name .. "!" is one interpolated string: `Hello {name}!`. The backtick form calls tostring on each hole, so a tostring(x) in the chain becomes {x}. The lint skips a chain whose literals hold a backtick, a brace, or an escape. alloy flux --fix rewrites the rest.

Set its level in the [lint] table of alloy.toml, or for one file with --@alloy-lint.