cmdxtmpl

func Interpolate ¶

func Interpolate(args []string, resolve func(tag string) (string, error)) ([]string, error)

Interpolate returns a new slice the same length as args, with every {{ }} tag in each element replaced by the result of resolve. Whitespace surrounding the inner text is trimmed before resolve sees it, so {{ env.SHELL }} and {{env.SHELL}} are equivalent. Element count is invariant: tags are never split on whitespace and empty results are preserved in place.

The first resolve error aborts the call and is returned wrapped with the element index and tag; on success the input is never mutated.