Foreign Commands Not Appearing in 'history' Array When 'sharehistory' Option is Enabled Until a Command is Entered

[Langbart <Langbart@xxxxxxxxxxxxxx>]

Guten  Tag, 

is it a bug that when the 'sharehistory' option is enabled, commands from other shells ('foreign') aren't included in the 'history' array until the user enters a command?

Consider the following widget and settings in my '.zshrc':

```sh

test-history() {

    BUFFER=""

    print

    print -- "=== HISTORY TEST ==="

    print -- "history array:"

    zmodload -F zsh/parameter p:history || return 1

    printf "%s\t%s\n" "${(kv)history[@]}" | head -5

    print -- "--------------------"

    print -- "fc command:"

    print -r -- "$(fc -rl -5)"

    zle accept-line

}

zle -N test-history

bindkey '^R' test-history

setopt SHARE_HISTORY

```

I open two terminals, type 'echo Test 1' in Terminal 1, switch to Terminal 2, and press 'Enter' without entering a command. Pressing 'Ctrl-R' shows that the 'history' array doesn't include the 'echo Test 1' entry.

```txt

=== HISTORY TEST ===

history array:

--------------------

fc command:

    1* echo Test 1

```

After entering 'echo Test 2' in Terminal 2 and pressing 'Ctrl-R' again in Terminal 2, the output is:

```txt

=== HISTORY TEST ===

history array:

2       echo Test 2

1       echo Test 1

--------------------

fc command:

    2  echo Test 2

    1* echo Test 1

```

Prepending 'fc -RI' before accessing the 'history' array seems to resolve the issue. Is this the recommended workaround to ensure that the 'history' array lists its resuls like 'fc -rl ...'  does ?

```sh

...

    [[ "${options[sharehistory]}" == "on" ]] && fc -RI

    zmodload -F zsh/parameter p:history || return 1
    printf "%s\t%s\n" "${(kv)history[@]}" | head -5

...

```

Related:

• https://github.com/junegunn/fzf/issues/4061