Differentiate between "not equal" ligatures

[akarzim]

• The requested variant shape does not go too far away from Iosevka's design.
• The requested variant does not conflict with any characters in Unicode that Iosevka currently supports.
• Some other monospace/programming fonts supported the requested variant. Provide images below.

---

Why not distinguish the /= ligature from the != ligature for those who want to enable both the default ligature and Haskell's "not equal" ligature when using discretionary ligatures (dlig)?

Here is a proposal based on the oblic bang:

[be5invis]

For Haskell, it is preferred to use HSKL rather than dlig. In most editors if the user could enable dlig then he/she should be able to enable HSKL and use Haskell-specific ligatures for Haskell. AFAIK, VSCode support such configuration.

[akarzim]

I use Vim in a terminal to write code. So Vim uses the font used by the console/terminal. It makes no sense (and it is not possible) to change the terminal's font depending on the file being edited.

[be5invis]

@akarzim I will not add ambiguous ligation for dlig, but I can add a calt-customization option calt-exeq-alt-1 for an alternative exeq, so you could customize like this:

[buildPlans.iosevka-custom]
design = [
  'calt-center-ops', 'calt-arrow', 'calt-arrow2', 'calt-trig', 'calt-llgg', 'calt-eqeq',
  'calt-ineq', 'calt-slasheq', 'calt-exeq-alt-1', 'calt-ltgt-diamond', 'calt-plusplus',
  'calt-dotoper', 'calt-kern-dotty', 'calt-logic'
]

It will create ligation like this:

[akarzim]

Looks perfect. Thank you!