tagpreview.sh - preview not centering with error

[noisyscanner]

• I have fzf 0.30.0 or above
• I have read through https://github.com/junegunn/fzf.vim/blob/master/README.md
• I have read through https://github.com/junegunn/fzf/blob/master/README-VIM.md
• I have read through the manual page of fzf (man fzf)
• I have searched through the existing issues

When using :Tags, the preview window does not display the correct line number, but displays the below error.

Seems that the below snippet in tagpreview.sh is the cause:

CENTER="$("${VIMNAME}" -i NONE -u NONE -e -m -s "${FILE}" \
              -c "set nomagic" \
              -c "${EXCMD}" \
              -c 'let l=line(".") | new | put =l | print | qa!')" || return

A simple replace with the below works for me, but I am wondering the implications of this. Ie, just take the line number we already get passed in via EXCMD and use that for the center.

CENTER=$(echo "${EXCMD}" | awk -F ' ' '{print $1}')

I can stick a PR in for this if it looks fine

[junegunn]

While using return in that context is wrong (it should be something like exit 1), :Tags works fine on my machine with
proper preview support.

Any idea why the command is not working for you in the first place?

[noisyscanner]

For me both with vim 9.0 and nvim 0.9.0, it just returns the number of the last line in the tags file
Eg

export VIMNAME=nvim
export FILE=whatever-it-does-not-matter
export EXCMD="47 tags"

nvim -i NONE -u NONE -e -m -s "${FILE}" \
  -c "set nomagic" \
  -c "${EXCMD}" \
  -c 'let l=line(".") | new | put =l | print | qa!'

# returns 8216, the number of lines in the `tags` file

Not sure I fully understand what this command is doing. EXCMD contains the line number in $FILE (ie 47 above), is it not ok to simply use that?