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perf: Speed up compiling arg! macro #4673

Merged
merged 1 commit into from Jan 24, 2023
Merged

perf: Speed up compiling arg! macro #4673

merged 1 commit into from Jan 24, 2023

Commits on Jan 24, 2023

  1. perf: Speed up compiling arg! macro 

    To "append" calls, we were passing in a more and more complex expression
on each recursive invocation.  We now pass in a fixed amount of data on
each iteration, reducing how much the macro machinery needs to parse,
speeding up builds.

Fresh builds went from 39s to 32s on my machine.

Inspired by clap-rs#4670
    @epage
    epage committed Jan 24, 2023
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