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edlin expansion takes ~15s for erl_syntax #9215

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robertoaloi opened this issue Dec 18, 2024 · 0 comments
Open

edlin expansion takes ~15s for erl_syntax #9215

robertoaloi opened this issue Dec 18, 2024 · 0 comments
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@robertoaloi
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Describe the bug
In the context of #WhatsApp/erlang-language-platform/issues/70, I started playing around with edlin auto-completion and noticed it can be very slow for certain functions.

To Reproduce

1> timer:tc(fun() -> edlin_expand:expand(lists:reverse("erl_syntax:concrete("),[]) end).

This takes almost 15s for me the first time. Then, the result is cached.

Expected behavior
Completions are provided much faster.

Affected versions
OTP 27
@robertoaloi robertoaloi added the bug Issue is reported as a bug label Dec 18, 2024
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@robertoaloi