OS: FreeBSD 13
Shell: csh
% freebsd-version
13.0-RELEASE-p5
% ps $$
PID TT STAT TIME COMMAND
23662 3 Ss 0:00.14 -csh (csh)
Quick CLI Overview of OpenType Features for a Font
% sudo pkg install harfbuzz harfbuzz-hb-view harfbuzz-icu
% pkg search imagemagick
ImageMagick6-6.9.12.34,1 Image processing tools (legacy version)
ImageMagick6-nox11-6.9.12.34,1 Image processing tools (legacy version)
ImageMagick7-7.1.0.19 Image processing tools
ImageMagick7-nox11-7.1.0.19 Image processing tools
fpc-imagemagick-3.2.2 Free Pascal interface to ImageMagick
% sudo pkg install imagemagick7
Output:
Updating FreeBSD repository catalogue...
FreeBSD repository is up to date.
All repositories are up to date.
The following 9 package(s) will be affected (of 0 checked):
New packages to be INSTALLED:
ImageMagick7: 7.1.0.19
ghostscript9-agpl-x11: 9.52
gsfonts: 8.11_8
liblqr-1: 0.4.2
libraqm: 0.7.1
libraw: 0.20.2_2
libwmf: 0.2.12
libzip: 1.7.3
pkgconf: 1.8.0,1
---- snip ----
=====
Message from liblqr-1-0.4.2:
--
NOTE: In order to compile examples for liblqr, you will
also need pngwriter port (/usr/ports/graphics/pngwriter).
Examples are located in /usr/local/share/examples/liblqr-1
% sudo pkg install pngwriter
% sudo pkg install kitty
---- snip ----
New packages to be INSTALLED:
kitty: 0.23.1_1
ncurses: 6.3
---- snip ----
=====
Message from ncurses-6.3:
--
To get the terminfo database please install the terminfo-db package:
pkg install terminfo-db
% sudo pkg install terminfo-db
% locate .otf | wc -l
987
% locate -i ".otf" | tail -3
/usr/local/share/texmf-dist/fonts/opentype/public/xcharter/XCharter-BoldItalic.otf
/usr/local/share/texmf-dist/fonts/opentype/public/xcharter/XCharter-Italic.otf
/usr/local/share/texmf-dist/fonts/opentype/public/xcharter/XCharter-Roman.otf
% cp -i \
/usr/local/share/texmf-dist/fonts/opentype/public/xcharter/XCharter-Roman.otf \
/tmp/
% otfinfo --features /tmp/XCharter-Roman.otf
c2sc Small Capitals From Capitals
cpsp Capital Spacing
kern Kerning
liga Standard Ligatures
lnum Lining Figures
onum Oldstyle Figures
smcp Small Capitals
sups Superscript
% command -v hb-view
/usr/local/bin/hb-view
Based on 💡FAQ about displaying stuff in a terminal
% vi hb-feat
% cat hb-feat
#!/bin/sh
hb-view --features="$2" -O svg $1 $3 | grep -v '<rect' | \
sed 's/<g style="fill:rgb(0%,0%,0%);fill-opacity:1;">/ \
<g style="fill:#eeeeee">/' | rsvg-convert | \
convert -trim -resize '25%' - - | kitty icat --align=left
% chmod 0744 hb-feat
Location where I keep my helper binaries, useful tools and scripts:
% ls -ld /mnt/usbflashdrive/bin/
drwxr-xr-x 7 dusko dusko 512 Feb 6 12:24 /mnt/usbflashdrive/bin/
% mv hb-feat /mnt/usbflashdrive/bin/
Launch an instance of kitty terminal emulator.
% kitty
In kitty terminal emulator:
% /mnt/usbflashdrive/bin/hb-feat /tmp/XCharter-Roman.otf +smcp,+onum 'Test'
% /mnt/usbflashdrive/bin/hb-feat /tmp/XCharter-Roman.otf -smcp,-onum 'Test'
% /mnt/usbflashdrive/bin/hb-feat /tmp/XCharter-Roman.otf +liga,+sups 'a2'
Output showing images of font preview:
Exit kitty terminal emulator.
% exit
Sixel for Terminal Graphics
Xterm has supported graphical output for decades. It has a Tektronix 4014 mode. XTerm also supports Sixel (raster) and ReGIS (vector) graphics in the main window.
From the man page for pkg-query(8):
%O[kvdD]
Expands to the list of options of the matched package, where k stands
for option key, v for option value, d for option default value and D
for option description.
List all options (%Ov) for the xterm package and whether they have been changed from their default values (%Od).
% pkg query %Ok-%Ov-%Od xterm
256COLOR-on-on
DABBREV-off-off
DECTERM-off-off
GNOME-off-off
LOGGING-off-off
LUIT-on-on
NEXTAW-off-off
PCRE2-off-off
REGIS-off-off
SCRNDUMP-off-off
SIXEL-on-on
TOOLBAR-off-off
WCHAR-on-on
XAW-on-on
XAW3D-off-off
XAW3DXFT-off-off
XINERAMA-off-off
The SIXEL option is on.
XTerm terminal emulator supports sixel. You need to run it by setting the terminal identifier to a sixel capable terminal; for example, VT340.
Reference:
Sixel Graphics - XTerm Control Sequences - XTerm Documentation
(Retrieved on Feb 20, 2022)
% xterm -ti vt340
% cd /tmp
% fetch \
https://raw.githubusercontent.com/saitoha/libsixel/master/images/snake.six
% cat /tmp/snake.six
References:
FAQ about displaying stuff in a terminal
(Retrieved on Feb 20, 2002)
sixel for terminal graphics
(Retrieved on Feb 20, 2022)