As far as I know, `fc` makes it impossible to tell whether history items
used an actual newline character or the string "\n". Pulling from the
`$history` array gives a more accurate representation of the actual
command that was run.
According to a few tests, the `fc` builtin appears to be quite a bit
faster than searching through the `$history` associative array when
dealing with large history files (500K+).
This strategy relies on the history being exactly in the order in which
commands have been entered. Therefore, options like suppressing
duplicates or expiring duplicates first will lead to unexpected
suggestions.
A new suggestion strategy 'match_prev_cmd' is available. This is a bit
more context aware variaton on the default strategy.
The suggestion will be:
- The newest history entry that matches the current prefix, AND
- Whose preceding history entry also matches the previously executed
command.
See src/strategies/match_prev_cmd.zsh for an example.
Eric Freese
Tassilo Horn
Geza Lore