Suppose that a person was born in country A and the language of country A was his mother language (non-English); he then immigrates to country B (English speaking), is a citizen of country B and has done his undergraduate entirely in country B. This person had no need to typeset anything in his own native language but devoted a lot of time and developed an open-source (La)TeX system for country A; the localized (TeX)LaTeX system that he has developed is now extensively used in country A in academia for typesetting books, theses , ... . He is also a well-known person in country A for his TeX work. His TeX work for country A was very significant that improved the quality of the academic publishing in country A a lot and academics in country A can even write a letter to confirm this.
Now if this person applies for graduate school in electrical engineering (USA), does his TeX work for country A help him in his graduate admission? is there any need to mention his TeX work or will not the admission committee really care?
Note: USA is neither country A nor country B