zsh-dev - 5.8-6+deb11u1 main

Zsh is a UNIX command interpreter (shell) usable as an
interactive login shell and as a shell script command
processor. Of the standard shells, zsh most closely resembles
ksh but includes many enhancements. Zsh has command-line editing,
built-in spelling correction, programmable command completion,
shell functions (with autoloading), a history mechanism, and a
host of other features.
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This package contains headers and scripts necessary to compile
third-party modules.