Numeric fontWeight is rejected by the profile parser #7690
Description
Environment
Windows build number: Microsoft Windows [Version 10.0.19041.508]
Windows Terminal version (if applicable): Windows Terminal Preview Version: 1.3.2382.0
Any other software? Fira Code 5.2: https://github.com/tonsky/FiraCode/releases/tag/5.2
Steps to reproduce
(How I got there, starting from a working setup, is hidden inside the fold. It shouldn't affect the reproduction, but is here in case there is something relevant hidden there.)
Details
Starting from a working default profile:
with the Fira Code TTFs (six files, one for each of Bold, Light, Mediuma, Regular, Retina, SemiBold) installed.
I then removed the Fira Code TTFs, and installed the Variable TTF (FiraCode-VF.ttf).
Samples in white-on-black are from the Windows "Font Properties" dialogs.
After this change, my terminal looked like this: 
which is Consolas Regular at 14pt:
, but with better anti-aliasing. (Or rather, with any anti-aliasing, I suspect)
This makes sense, since there isn't a "Fira Code Retina" font anymore on my machine, although some kind of notification that my font wasn't found would have been nice. Also, I would have expected a fallback to Cascadia Code, not Consolas. Cascadia Code is installed on my machine as part of the Windows Terminal package (twice, once for Preview, once for regular), so it seems like a better fallback?
I initially tried to move the 'Retina' from the fontFace to the fontWeight
"profiles": {
"defaults": {
// Put settings here that you want to apply to all profiles.
"colorScheme": "Canon Solarized Dark",
"fontFace": "Fira Code",
"fontSize": 14,
"fontWeight": "Retina",
"padding": "0, 0, 0, 0",
"cursorShape": "filledBox"
},
"list": [
//...
]
},but that's not in the hard-coded list of named font-weights. I was disappointed that it wasn't just asking the chosen font if the fontWeight given matched to a font instance name, but not super-disappointed:
I saw in the profile schema and settings implementation that I could pass in a uint to fontWeight, if there was no existing hard-coded name for my desired weight.
I looked up the weight of the Retina instance in the Fira Code variable TTF (450), and got:
"profiles": {
"defaults": {
// Put settings here that you want to apply to all profiles.
"colorScheme": "Canon Solarized Dark",
"fontFace": "Fira Code",
"fontSize": 14,
"fontWeight": "450",
"padding": "0, 0, 0, 0",
"cursorShape": "filledBox"
},
"list": [
//...
]
},Expected behavior
I get the same font I had when using Fira Code Retina as my fontFace and no fontWeight setting, with the Fira Code non-variable TTF files installed, i.e. 6 separate TTFs, one for each of Bold, Light, Mediuma, Regular, Retina, and SemiBold.
Actual behavior
Windows Terminal raises an error about the fontWeight value:
and then ignores the entire theme configuration, including my colour scheme setting.
So yeah, unlike above, I was super-disappointed this time. As a workaround, I'm using "fontWeight": "medium".
If I comment-out the fontWeight, it looks like this: 
which appears to be 'Regular' instance (weight 400): 
rather than 'Retina' instance (weight 450): 
which makes sense, if the default value for fontWeight is 'normal'.
Side-note: I was inspired to make this change by noticing that Cascadia Code recommends their Variable TTF over the fixed-size TTFs, and also #107 (comment)