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zsh/Functions/TCP/tcp_rename

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# Rename session OLD (defaults to current session) to session NEW.
# Does not handle aliases; use tcp_alias for all alias redefinitions.
local old new
if (( $# == 1 )); then
old=$TCP_SESS
new=$1
elif (( $# == 2 )); then
old=$1
new=$2
else
print "Usage: $0 OLD NEW" >&2
return 1
fi
local fd=$tcp_by_name[$old]
if [[ -z $fd ]]; then
print "No such session: $old" >&2
return 1
fi
if [[ -n $tcp_by_name[$new] ]]; then
print "Session $new already exists." >&2
return 1
fi
# Can't rename an alias
if [[ $tcp_by_fd[$fd] != $old ]]; then
print "Use tcp_alias to redefine an alias." >&2
return 1
fi
tcp_by_name[$new]=$fd
unset "tcp_by_name[$old]"
tcp_by_fd[$fd]=$new
[[ $TCP_SESS = $old ]] && TCP_SESS=$new
if zmodload -i zsh/parameter; then
if (( ${+functions[tcp_on_rename]} )); then
tcp_on_rename $new $fd $old
fi
fi