我正在尝试找出百分比 (%) 字符的 METAFONT 源,该字符由\%
TeX 创建。我使用的是 NormalCMR10
字体。我这样做是因为我想要一个略微修改过的这个字符的漂亮点,宽度相同,但高度只有其一半。
图 1:比较百分比、零和我想要的字符(红色)
我知道 CMR MF 源代码的整个包可从 CTAN 获得(也可从 TeXLive 本地获得):
https://www.ctan.org/tex-archive/fonts/cm/mf
但是我找不到 的实际来源%
。由于%
也是 TeX 的一个特殊字符,它会注释掉一行,因此有很多这样的实例,因此手动检查 Computer Modern 的 123 个 MF 文件确实很繁琐。
那么,有没有办法调试元字体并在运行 MF 时逐个查看字符mf cmr10
?或者可能有其他合理的方法来做到这一点?
答案1
让我们按照它cmr10.mf
所说的去做;在它的最后
generate roman
其中generate
(通常)等同于input
。现在roman.mf
有
input romanu; % upper case (majuscules)
input romanl; % lower case (minuscules)
input greeku; % upper case Greek letters
input romand; % numerals
input romanp; % ampersand, question marks, currency sign
input romspl; % lowercase specials (dotless \i, ligature \ae, etc.)
input romspu; % uppercase specials (\AE, \OE, \O)
input punct; % punctuation symbols common to roman and italic text
input accent; % accents common to roman and italic text
我们可以尝试punct.mf
找到
cmchar "Per cent sign";
beginchar("%",9u#+max(6u#,2fudge*(hair#+stem#)),
body_height#,body_height#-asc_height#);
italcorr if hefty: .4asc_height#*slant-.5u# else: h#*slant-u# fi;
adjust_fit(0,0); pickup fine.nib;
numeric left_curve,right_curve;
left_curve=hround 5/6[fudged.hair,fudged.stem];
right_curve=max(fine.breadth,hround(fudged.hair if hefty:-2stem_corr fi));
pos1(vair,90); pos2(left_curve,180); pos3(vair,270); pos4(right_curve,360);
top y1r=h; lft x2r=hround u; rt x4r=hround(.5w-1.5u);
bot y3r=floor(if monospace: .7 else: .5 fi\\ asc_height);
x1=x3=.5[x2,x4]; y2=y4=.5[y1,y3];
filldraw stroke pulled_super_arc.e(1,2)(superpull)
& pulled_super_arc.e(2,3)(superpull); % left half of upper bowl
filldraw stroke super_arc.e(3,4) & super_arc.e(4,1); % right half of upper bowl
pos5(vair,90); pos6(left_curve,180); pos7(vair,270); pos8(right_curve,360);
bot y7r=-d; rt x8r=hround(w-u); lft x6r=hround(.5w+1.5u);
top y5r=vround(if monospace: .3 else: .5 fi\\ asc_height);
x5=x7=.5[x6,x8]; y6=y8=.5[y5,y7];
filldraw stroke pulled_super_arc.e(5,6)(superpull)
& pulled_super_arc.e(6,7)(superpull); % left half of lower bowl
filldraw stroke super_arc.e(7,8) & super_arc.e(8,5); % right half of lower bowl
pickup rule.nib; top y9=h; bot y10=-d;
if hefty: x9=good.x(x5-eps); x10=good.x(x1+eps);
draw z9--z10; % diagonal
else: rt x9=hround(w-2.5u); lft x10=hround 2.5u; draw z9--z10; % diagonal
pickup fine.nib; pos9(rule_thickness,angle(z9-z10)+90);
pos11(vair,angle(z1r-z4r)-90); pos12(vair,angle(z9-z10)+90);
path p; p=super_arc.r(1,4); z11r=point 2/3 of p; z12r=z9r;
filldraw stroke z11e{direction 2/3 of p}...{z9-z10}z12e; fi % link
penlabels(1,2,3,4,5,6,7,8,9,10,11,12); endchar;