ANSI color codes in terminal not working properly

[unic0rn]

Issue Type: Bug

some of the escape codes are not working properly.

escape sequence used:
\[\e[0m\]\[\e[97m\]\[\e[40m\] 15/0 \[\e[96m\]\[\e[41m\] 14/1 \[\e[95m\]\[\e[42m\] 13/2 \[\e[94m\]\[\e[43m\] 12/3 \[\e[93m\]\[\e[44m\] 11/4 \[\e[92m\]\[\e[45m\] 10/5 \[\e[91m\]\[\e[46m\] 9/6 \[\e[90m\]\[\e[47m\] 8/7 \[\e[37m\]\[\e[100m\] 7/8 \[\e[36m\]\[\e[101m\] 6/9 \[\e[35m\]\[\e[102m\] 5/10 \[\e[34m\]\[\e[103m\] 4/11 \[\e[33m\]\[\e[104m\] 3/12 \[\e[32m\]\[\e[105m\] 2/13 \[\e[31m\]\[\e[106m\] 1/14 \[\e[30m\]\[\e[107m\] 0/15 \[\e[0m\] normal \[\e[7m\] inversed \[\e[0m\]

palette used:

expected output (from mintty):

actual output:

amongst more obvious problems, it seems to assume that certain colors equal to terminal background/foreground - which is entirely wrong. dark theme output:

there's a reason default background and foreground colors are separate from the ANSI palette.

terminal is running cygwin's bash, works perfectly fine otherwise.

VS Code version: Code 1.29.1 (bc24f98, 2018-11-15T19:13:36.375Z)
OS version: Windows_NT x64 10.0.15063

System Info

Item	Value
CPUs	AMD A8-7600 Radeon R7, 10 Compute Cores 4C+6G (4 x 3094)
GPU Status	2d_canvas: enabled checker_imaging: disabled_off flash_3d: enabled flash_stage3d: enabled flash_stage3d_baseline: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on native_gpu_memory_buffers: disabled_software rasterization: enabled video_decode: enabled video_encode: enabled webgl: enabled webgl2: enabled
Memory (System)	5.96GB (2.84GB free)
Process Argv
Screen Reader	no
VM	0%

Extensions (4)

Extension	Author (truncated)	Version
linter-gfortran	krv	2.0.1
cpptools	ms-	0.20.1
tcl	sle	0.2.0
vim	vsc	0.16.13

(1 theme extensions excluded)

[vscodebot]

(Experimental duplicate detection)
Thanks for submitting this issue. Please also check if it is already covered by an existing one, like:

• Long line with string full of braces and brackets breaks syntax highlighting (#39962)
• CTRL + e not working (#63272)

[Tyriar]

This is likely related to winpty, tracking in #45693