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% THIS IS THE OFFICIAL COMPUTER MODERN SOURCE FILE comlig.mf BY D E KNUTH.
% IT MUST NOT BE MODIFIED IN ANY WAY UNLESS THE FILE NAME IS CHANGED!

% This file defines characters common to roman and italic text fonts
% that appear only when |ligs>0|.

% Character codes \0042, \0055, \0134, \0173, and \0174 are generated.

ligtable "`": "`"=:oct"134";
ligtable "'": "'"=:oct"042", "?" kern 2u#, "!" kern 2u#;

ligtable "-": "-"=:oct"173";
ligtable oct"173": "-"=:oct"174";

cmchar "Closing quotes";
beginchar(oct"042",7u#+max(2u#,dot_size#),asc_height#,0);
italcorr asc_height#*slant+dot_size#-4.1u#;
adjust_fit(0,0);
x1-.5dot_size=hround .6u; y2+.5dot_size=h;
x2-x1=hround(1.5u+max(2u,dot_size)); y2=y1;
comma(1,a,dot_size,.25u,comma_depth); % left dot and tail
comma(2,b,dot_size,.25u,comma_depth); % right dot and tail
penlabels(1,2); endchar;

cmchar "Hyphen";
beginchar("-",6u#,x_height#,0);
italcorr .5x_height#*slant-.5u#;
adjust_fit(0,0);
numeric thickness; thickness=if hefty:bar else:.75[hair,stem] fi;
pickup crisp.nib; pos1(thickness,90); pos2(thickness,90);
top y1r=top y2r=vround(.5h+.5thickness); rt x2=hround(w-u)+eps;
if monospace: x2=w-x1 else: lft x1=hround .2u-eps fi;
filldraw stroke z1e--z2e;  % bar
penlabels(1,2); endchar;

cmchar "Opening quotes";
beginchar(oct"134",7u#+max(2u#,dot_size#),asc_height#,0);
italcorr asc_height#*slant-.1u#;
adjust_fit(0,0);
x2+.5dot_size=hround(w-.6u); y1+.5dot_size=h-comma_depth;
x2-x1=hround(1.5u+max(2u,dot_size)); y2=y1;
ammoc(1,a,dot_size,.25u,comma_depth); % left dot and tail
ammoc(2,b,dot_size,.25u,comma_depth); % right dot and tail
penlabels(1,2); endchar;

cmchar "En dash";
beginchar(oct"173",9u#,x_height#,0);
italcorr .61803x_height#*slant+.5u#;
adjust_fit(0,0);
pickup crisp.nib; pos1(vair,90); pos2(vair,90);
top y1r=top y2r=vround(.61803h+.5vair); lft x1=-eps; rt x2=w+eps;
filldraw stroke z1e--z2e;  % bar
penlabels(1,2); endchar;

cmchar "Em dash";
beginchar(oct"174",18u#,x_height#,0);
italcorr .61803x_height#*slant+.5u#;
adjust_fit(letter_fit#,letter_fit#);
pickup crisp.nib; pos1(vair,90); pos2(vair,90);
top y1r=top y2r=vround(.61803h+.5vair); lft x1=-eps; rt x2=w+eps;
filldraw stroke z1e--z2e;  % bar
penlabels(1,2); endchar;