markdown syntax highlighting doesn't combine bold + italic

[gmccullo]

Issue Type: Bug

Markdown syntax highlighting will display bold or italics but not both. For example:

Running without extensions makes no difference.

VS Code version: Code 1.43.0 (78a4c91400152c0f27ba4d363eb56d2835f9903a, 2020-03-09T19:47:57.235Z)
OS version: Windows_NT x64 10.0.18363

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-7660U CPU @ 2.50GHz (4 x 2496)
GPU Status	2d_canvas: enabled flash_3d: enabled flash_stage3d: enabled flash_stage3d_baseline: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on oop_rasterization: disabled_off protected_video_decode: enabled rasterization: enabled skia_renderer: disabled_off_ok video_decode: enabled viz_display_compositor: enabled_on viz_hit_test_surface_layer: disabled_off_ok webgl: enabled webgl2: enabled
Load (avg)	undefined
Memory (System)	15.93GB (6.54GB free)
Process Argv
Screen Reader	no
VM	0%

[vibl]

It's been 2.5 years since this issue was submitted. The bug is still pressent.

[mjbvz]

@vibl The status is: you haven't submitted a pr to fix this in 2.5 years :)

[JesseSteele]

FWIW, the text example in #159 shows many different combinations for testing. We're now over 4 years on this bug. Game on!

[RedCMD]

technically the problem is with VSCode, not this grammar
as the grammar correctly assigns both the italic and bold tokens
however VSCode only applies the last font style used

currently this can only be fixed by theme authors supplying a separate token for every single combination of font styles
underline, bold, italic, strikethrough and normal
and then this grammar would need to manually use the correct token for each combination of font styles
1 + 4 + 4*3 + 4*3*2 + 4*3*2*1 = 65 different font style combinations

[JesseSteele]

Passing the responsibility to the theme devs would mean that a standard way to handle this be required for a theme to listed. That's one way, but if it can be solved at a deeper level so theme devs could focus more on the actual style, that would seem to make more sense with dev specialization. Which course would need a decision from a PM.

[RedCMD]

maybe #160 should be moved back to VSCode as this is a VSCode issue, not Markdowns @mjbvz