Line height vs. Block Char height

[HoffmannP]

The Block Characters (mostly used to draw primitives in TUIs) are not fitting together as they are not as high as the line height - the Border Characters do, so it seems to be possible. See image below

[frankrolf]

Hi Peter,

thank you for your message.
It is hard to predict the line-height of different applications; and I could not find a standard value that works in all the different cases. I built the box drawing characters (top part of your PNG) in a way that line spacing up to 140 % is supported. The Block elements are based on the height of the em-square; and are limited by the character width; which is a practice I saw in other monospaced fonts.
What would you suggest as an optimal height for those? Maybe you can even point me to a standard or some documentation about the suggested height?

Thank you,
Frank

[miguelsousa]

@HoffmannP Or if you can point out a font that works as you would expect, that would be helpful.

[eevee]

I'm noticing this too. Flicking through some of the monospace fonts I have:

• Source Code Pro: large vertical gap
• Lucida Console: works pretty much perfectly
• Inconsolata: slight vertical gap, slight horizontal overlap
• Monaco: moderate vertical gap, slight horizontal overlap
• Liberation Mono: works pretty much perfectly
• Ubuntu Mono: works pretty much perfectly, albeit with some vertical banding within the characters themselves

All at 10pt, looking at a grid made of ▒s in LilyTerm (based on libvte).

[frankrolf]

Hey Eevee,
For making more of this information, I would need some more context.
What means “works pretty much perfectly”? In which application/context,
which settings are used?

Thanks!
Frank

[HoffmannP]

I have an comparision of the mono-fonts in my system used in mate-terminal:

[eevee]

@frankrolf Using Source Code Pro, I see this:

But using Liberation Mono, I see this (in exactly the same part of the screen):

The latter is what I expect to see, since the Block Elements characters are supposed to fill their cell; there should never be a gap between vertically adjacent blocks. (I do appreciate that Source Code Pro isn't subject to whatever subpixel disaster befell Liberation Mono there :))

LilyTerm doesn't have any options concerning line height, so I definitely haven't changed that in any way.

[eevee]

For posterity: looks like this was fixed in v2.015 (1.035 italic), released on May 2. Thank you! :)