Struct MatchData 

pub struct MatchData {
    pub match: Option<Vec<String>>,
    pub mbegin: Option<Vec<String>>,
    pub mend: Option<Vec<String>>,
}

Save/restore for the per-pattern-match magic vars $match, $mbegin, $mend. Direct port of MatchData and the savematch/restorematch/freematch trio in src/zsh/Src/Modules/zutil.c:33-80.

zstyle’s -e (eval pattern on retrieve) and zregexparse’s inner pattern matches both want to evaluate patterns without clobbering the caller’s $match[], $mbegin[], $mend[] variables. The C version keeps a heap-duplicated copy in a MatchData struct, runs the inner match, then either restores or frees. The Rust port stores Option<Vec<String>> — None means the var was unset.

Fields

match: Option<Vec<String>>

mbegin: Option<Vec<String>>

mbegin field.

mend: Option<Vec<String>>

mend field.