What are .nsh files? Can't find any docs for it

Question

I recently saw a .nsh file for the first time. What is it? I can't find any docs regarding this language. Does anyone know a good place to learn about it?

Answer 1

It is an installer file used by NSIS (Nullsoft Scriptable Install System), a program used for creating Windows installers; saves header information that can be included across all .NSI installer scripts; helps setup common environment conditions for an installation.

Answer 2

I recently saw a .nsh file for the first time. What is it?

They are scripts that operate in the context of a UEFI shell. ^[1] These tend to have standardised names, like startup.nsh.

I can't find any docs regarding this language. Does anyone know a good place to learn about it?

They adhere to the UEFI Shell Specification Version 2.2. ^[2] Wikipedia summarises it somewhat well.