This test pattern can be used to check if a programming font's letters are clearly distiguishable.
o0O s5S 9gq z2Z !|l1Iij {([|])} .,;: ``''""
a@#* vVuUwW <>;^°=-~ öÖüÜäÄßµ \/\/ -- == __
the quick brown fox jumps over the lazy dog
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
0123456789 &-+@ for (int i=0; i<=j; ++i) {}
-<< -< -<- <-- <--- <<- <- -> ->> --> ---> ->- >- >>-
=<< =< =<= <== <=== <<= <= => =>> ==> ===> =>= >= >>=
<-> <--> <---> <----> <=> <==> <===> <====> :: ::: __
<~~ </ </> /> ~~> == != /= ~= <> === !== !=== =/= =!=
<: := *= *+ <* <*> *> <| <|> |> <. <.> .> +* =* =: :>
/* */ (* *) [| |] {| |} ++ +++ \/ /\ |- -| <!-- <!---
Ligatures test pattern is taken from Iosevka For more ligatures patterns see Fira Code's showcases