Você pode ativar e desativar esse recurso no Bash usando o comando shopt
. Da página man do Bash.
trecho
cmdhist If set, bash attempts to save all lines of a multiple-line
command in the same history entry. This allows easy re-editing
of multiline commands.
lithist If set, and the cmdhist option is enabled, multi-line commands
are saved to the history with embedded newlines rather than using
semicolon separators where possible.
Ativa o recurso
$ shopt -s cmdhist
$ shopt -s lithist
Desativa o recurso
$ shopt -u cmdhist
$ shopt -u lithist
Exemplo
$ shopt -s cmdhist
$ shopt -s lithist
Agora, quando eu corro history
:
70 text=$(cat<<'EOF'
hello world\
foo\bar
EOF)
71 text=$(cat<<'EOF'
hello world\
foo\bar
EOF
)
72 ls
73 cd IT/
...
...
414 shopt -s lithist
415 history | less
416 function blah {
echo blah
}
417 history | less