Double the resolution using unicode

[posva]

By using the unicode character \u2580: ▀ and setting the background and the foreground colours, I can print two pixels in one space instead of one pixel in two spaces. This will double the resolution by printing twice as possible pixels given a certain width.

# use ^[[38;5;$colorindexm to change the foreground
# use ^[48;5;$colorindexm to change the background
printf '\033[38;5;1;48;5;2m\u2580\n'

[tomswartz07]

Is there a way to make the higher resolution (e.g. running with the -r 2 flag) the default?

[posva]

@tomswartz07 That's actually the case 😕

[posva]

@tomswartz07 maybe you're looking at the script version instead of the C version
(sorry for the double notification)

[tomswartz07]

@posva no problem, thanks for the followup.

I'm running the compiled c version. Does that make any difference?

[posva]

@tomswartz07 there is a call to check for unicode support at https://github.com/posva/catimg/blob/master/src/catimg.c#L38

If the test fails, the lower resolution is used. If you support unicode but the test fail, I'll be grateful if you could find some way to check unicode support on your machine. BTW, can you tell me which terminal are you using and which os?