Attached is the result of running
printf '\xf0\x9f\x93\x93' | XFT_DEBUG=1 dmenu
XFT_DEBUG=1
XftFontOpenName "monospace:size=10": Pattern has 2 elts (size 16)
family: "monospace"(s)
size: 10(f)(s)
Match Pattern has 43 elts (size 48)
family: "DejaVu Sans Mono"(s)
familylang: "en"(s)
style: "Book"(s)
stylelang: "en"(s)
fullname: "DejaVu Sans Mono"(s)
fullnamelang: "en"(s)
slant: 0(i)(s)
weight: 80(i)(s)
width: 100(i)(s)
size: 10(f)(s)
pixelsize: 13.3544(f)(s)
spacing: 100(i)(w)
foundry: "PfEd"(w)
antialias: True(w)
hintstyle: 1(i)(w)
hinting: True(s)
verticallayout: False(s)
autohint: False(s)
globaladvance: True(s)
file: "/usr/share/fonts/truetype/dejavu/DejaVuSansMono.ttf"(w)
index: 0(i)(w)
outline: True(w)
scalable: True(w)
dpi: 96.1514(f)(s)
rgba: 0(i)(s)
scale: 1(f)(s)
minspace: False(s)
charset:
0000: 00000000 ffffffff ffffffff 7fffffff 00000000 ffffffff ffffffff
ffffffff
0001: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffe00f
f371ffcf
0002: ffffffff fffffff3 ffff303b ffffffff ffffffff fbffffff 7fcff3c3
000843ff
0003: ffffffff ffffffff 01000008 fcf00002 ffffd7f0 fffffffb ffff7fff
ffff0003
0004: ffffffff ffffffff ffffffff 000c000c 0fff0000 0c0ffc3c ffff999f
03ffffff
0005: 3c030000 fffe0000 fe7fffff fffffffe 000006ff 00000000 00000000
00000000
0006: 882016c0 07fffffe 043fffff ce103fff 010200d9 40008210 00001000
03ff0000
000e: 00000000 80000000 00000000 00000000 fef02596 1bffecae 00003f00
00000000
0010: 00000000 00000000 00000000 00000000 00000000 00000000 ffff0000
1fffffff
001d: e0d00304 dfff7000 0fffffff 0980003c f8000020 feffffff 00000000
00000000
001e: ff0fffff ffff3fff fff03fff f3ffff0f 8bffffff 33c33003 3f003cc0
033fcf3f
001f: 3f3fffff ffffffff aaff3f3f 3fffffff ffffffff ffdfffff efcfffdf
7fdcffff
0020: ffff07ff f6ff804f 80000be0 fff30000 1fff7fff 273fffff 00000000
00000000
0021: 26e0e024 00004c54 fffb0100 00000000 ffff0200 ffffffff ffffffff
ffffffff
0022: ffafffff 3ff03f89 fffffffe ffffe3ff ffffefff 013c003f fc03e07c
000083ff
0023: f33fff7f ffe009e3 ffffffff 27ffffff f8200f0f 00007fff 0000c000
00000000
0024: 00000000 00000008 00000000 00000000 00000000 00000000 00000000
00000000
0025: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
ffffffff
0026: ffffffff ff00ffff ffffffff ffffffff 1fff0fff 00030003 00000000
00000000
0027: fffff3de fffffeff 7f47afff 003ffffe ff100000 7ffeffff 10000064
00e00fc1
0029: 00000000 00000000 00000000 00000000 01800180 00000000 00000000
0c000800
002a: 00000001 00008000 00000000 00000c00 00000000 00000000 00000000
00000000
002b: 07fc3fe0 00000000 00000000 00000000 00000000 00000000 00000000
00000000
002c: 00000000 00000000 00000000 f6e1e010 00000000 00000000 00000000
00000000
002e: 81000000 0000403c 00000000 00000000 00000000 00000000 00000000
00000000
00a7: f87fff00 000000fc 00000000 00000000 00037e00 00000400 00000000
03000000
00f6: 00000000 00000000 00000000 00000000 00000000 00000000 00000020
00000000
00fb: 00000006 00000000 fffc0000 ffffffff c03ffc03 00003c00 00000000
f0000300
00fe: 00000000 00000000 00000000 ffdf0000 ffffffff ffffffff ffffffff
9fffffff
00ff: 00000000 00000000 00000000 00000000 00000000 00000000 00000000
20000000
01d5: 00000000 00000000 04000000 00000000 00000000 00000000 00000000
00000000
01d6: 00000000 00000000 00000000 ffff0000 ffffffff 0000000f 00000000
00000000
01d7: 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ffc00000
(w)
lang:
aa|af|ar|ast|av|ay|az-az|az-ir|bm|be|bg|bi|bin|br|bs|bua|ca|ce|ch|chm|co|cs|cv|cy|da|de|el|en|eo|es|et|eu|fa|fi|fj|fo|fr|ff|fur|fy|ga|gd|gl|gn|gv|ha|haw|ho|hr|hu|hy|ia|ig|id|ie|ik|io|is|it|ka|kaa|ki|kk|kl|ku-am|kum|kv|kw|ky|la|lb|lez|ln|lt|lv|mg|mh|mi|mk|mo|mt|nb|nds|nl|nn|no|nr|nso|ny|oc|om|os|pl|pt|rm|ro|ru|sah|sco|se|sel|shs|sk|sl|sm|sma|smj|smn|so|sq|sr|ss|st|sv|sw|tk|tl|tn|to|tr|ts|tt|tw|tyv|uk|uz|ve|vo|vot|wa|wen|wo|xh|yap|yo|zu|ak|an|ber-dz|crh|csb|ee|fat|fil|hsb|ht|hz|jv|kab|kj|kr|ku-tr|kwm|lg|li|mn-mn|ms|na|ng|nv|pap-an|pap-aw|qu|quz|rn|rw|sc|sg|sn|su|ty|za(s)
fontversion: 155320(i)(s)
capability: "otlayout:DFLT otlayout:arab otlayout:cyrl otlayout:grek
otlayout:lao otlayout:latn"(w)
fontformatX Error of failed request: BadLength (poly request too large
or internal Xlib length error)
Major opcode of failed request: 139 (RENDER)
Minor opcode of failed request: 20 (RenderAddGlyphs)
Serial number of failed request: 15
Current serial number in output stream: 16
: "TrueType"(w)
embolden: False(s)
embeddedbitmap: True(s)
decorative: False(s)
lcdfilter: 1(i)(w)
namelang: "en"(s)
prgname: "dmenu"(s)
postscriptname: "DejaVuSansMono"(w)
color: False(w)
symbol: False(s)
render: True(s)
maxglyphmemory: 1048576(i)(s)
XftFontInfoFill: /usr/share/fonts/truetype/dejavu/DejaVuSansMono.ttf: 0
(13.3544 pixels)
XftFontInfoFill: /usr/share/fonts/truetype/noto/NotoColorEmoji.ttf: 0 (109
pixels)
