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InternalTokens are fixed as alphanum strings therefore TrimSpace from these. Also use isatty to not add a terminal newline when redirecting generate. Fix #11498 Signed-off-by: Andrew Thornton <art27@cantab.net> Co-authored-by: Lauris BH <lauris@nix.lv> Co-authored-by: Lauris BH <lauris@nix.lv>