Describe the bug

The autocompletion doesn't start when typing "\", only when typing the letter next to it, which is troublesome when autocompleting LaTeX command because the "\" will be written twice when accepting the suggestion.

Expected Behavior

I expect the autocompletion to start running when typing "\".

Current Behavior

Nothing happens when typing "\".

Reproduction Steps

Try in this window to type "\sum" : the completion will only start when typing the s, but then accepting the suggestion will write "\\sum" with two backslashes.

Possible Solution

No response

Additional Information/Context

No response

Ace Version / Browser / OS / Keyboard layout

v1.43/Firefox 1.39/NixOS 25.05/Azerty