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Procedural macros in expression position
Last release 4 years ago
no release in 18 months
Ships unpredictably
gaps range from 1 weeks to 1.8 years
Rarely documented
notes for 7 of 33 stable releases
2 versions withdrawn
withdrawn after publishing
10 years old
35 releases · first in 2016
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Add #[proc_macro_hack(only_hack_old_rustc)] attribute to switch to a native #[proc_macro] on sufficiently new compilers
#[proc_macro_hack(only_hack_old_rustc)] attribute to switch to a native #[proc_macro] on sufficiently new compilers (#66)Update documentation: as of Rust 1.45 proc-macro-hack is superseded by native support for #[proc_macro] in expression position. Only continue using th
One column per quarter.
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Handle macros whose definition contains interpolated macro_rules variables, such as:
Handle macros whose definition contains interpolated macro_rules variables, such as:
#[proc_macro_hack]
pub fn $name(input: TokenStream) -> TokenStream {...}Eliminate some possible dead_code warnings in generated code
Improve compile time by cutting out some dependencies
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Better error message when exceeding the limit of nested macro invocations ( rust-lang/futures-rs#2097 )
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Fix compile error on nightlies beginning with 2021-03-19
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