Well, you can try writing a script for FontForge. If the code is 1759 (by the way, hexadecimal or decimal?) Is missing from FontFile2.otf, you can do (unchecked):
Open("FontFile1.otf"); Select(0u1759); Copy(); Open("FontFile2.otf"); Select(0u1759); Paste(); Generate("FontFile3.otf", "", 4);
You can also use the MergeFonts () function to combine all font glyphs by copying all non-existent glyphs from A to B.
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