syalon

## Feature Request can sprintf consider supporting positional arguments? this feature is often needed, and is currently supported by many languages. [Reference](https://docs.microsoft.com/en-us/cpp/c-runtime-library/printf-p-positional-parameters?view=msvc-170) ``` e.g.: sprintf("%2$s %1$s", "world", "hello") ```

New BSIP: Resource exchange

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BSIP: TODO: Title: Resource exchange Authors: syalon Status: Draft Type: Protocol Created: 2020-08-07 # Abstract This BSIP describes an implementation of Resource Exchange operations. # Motivation Now many people have...

when i call the Subexec.run more times later~ memory is leaked~ i think this is the ruby vm's bug~ p.s.: 1、my environment is window x64~ 2、test ruby version is 1.9.3&2.0.0

Captured block parameter not recognised when used inside macro

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my test code ``` def assert(cond, &err : -> String) {% if flag?(:debug) %} raise err.call unless cond {% end %} end assert(false) { "test error" } ``` compile result...