Htydjtk

Wikipedia mentions a ligature for NB (nota bene), however I can't seem to find any reference to this in the latex literature. Is there a way to use this ligature in my latex document?

An example of the ligature:

To the best of my knowledge, there are no fonts out there (not even Junicode!) that provide a ready-made NB ligature.

It's actually not too difficult to create a composite NB glyph (not to be confused with a "true" ligature) by inserting a negative kern between N and B. However, for many font families the N-B composite is quite unattractive. It's a vivid reminder, IMNSHO, of the fact that creating a good-looking ligature requires a lot more work than just "snugging up" two or more glyphs.

The following screenshot shows possible NB candidates for 4 serif fonts and 3 sans-serif fonts. (If you wanted to use this in "real work", be sure to omit the textcolor{red}{...} wrapper in the definition of NB.)

documentclass{article}

usepackage{xcolor} % for 'textcolor' macro

newcommandNB[1][0.3]{Nkern-#1emtextcolor{red}{B}} % default kern amount: -0.3em

usepackage{fontspec}

begin{document}



setmainfont{Latin Modern Roman}

NB --- Latin Modern Roman



setmainfont{Times Roman}

NB[0.265] --- Times Roman



setmainfont{EB Garamond}

NB[0.275] --- EB Garamond



setmainfont{Trajan Pro}

NB[0.385] --- Trajan Pro



setmainfont{Latin Modern Sans}

NB[0.27] --- Latin Modern Sans



setmainfont{Helvetica}

NB[0.24] --- Helvetica



setmainfont{Futura}

NB[0.295] --- Futura



end{document}

Even among commercial fonts with many unusual ligatures, this ligature is rare. The only one in my large collection is found in P22 Hoy Pro, and it hasn’t been made readily accessible through any defined feature:

documentclass{article}

usepackage{fontspec,luacode}

setmainfont{P22 Hoy Pro}[

  Contextuals=Alternate,

  Ligatures=Rare]

% https://tex.stackexchange.com/a/120762:

begin{luacode}

  documentdata       = documentdata or { }



  local stringformat = string.format

  local texsprint    = tex.sprint

  local slot_of_name = luaotfload.aux.slot_of_name



  documentdata.fontchar = function (chr)

    local chr = slot_of_name(font.current(), chr, false)

    if chr and type(chr) == "number" then

      texsprint

        (stringformat ([[char"%X]], chr))

    end

  end

end{luacode}

deffontchar#1{directlua{documentdata.fontchar "#1"}}

begin{document}

fontchar{N_B}: This is P22 Hoy Pro.

end{document}