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Update ADVANCED.md: transform-query to restore the query string

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Close #2961
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Junegunn Choi 2023-02-12 17:23:17 +09:00
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ADVANCED.md
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@ -1,7 +1,7 @@
Advanced fzf examples
======================
*(Last update: 2022/08/25)*
*(Last update: 2023/02/12)*
<!-- vim-markdown-toc GFM -->
@ -408,10 +408,10 @@ IFS=: read -ra selected < <(
### Switching between Ripgrep mode and fzf mode
*(Requires fzf 0.30.0 or above)*
*(Requires fzf 0.36.0 or above)*
fzf 0.30.0 added `rebind` action so we can "rebind" the bindings that were
previously "unbound" via `unbind`.
[fzf 0.30.0][0.30.0] added `rebind` action so we can "rebind" the bindings
that were previously "unbound" via `unbind`.
This is an improved version of the previous example that allows us to switch
between Ripgrep launcher mode and fzf-only filtering mode via CTRL-R and
@ -421,6 +421,7 @@ CTRL-F.
#!/usr/bin/env bash
# Switch between Ripgrep launcher mode (CTRL-R) and fzf filtering mode (CTRL-F)
rm -f /tmp/rg-fzf-{r,f}
RG_PREFIX="rg --column --line-number --no-heading --color=always --smart-case "
INITIAL_QUERY="${*:-}"
IFS=: read -ra selected < <(
@ -429,17 +430,27 @@ IFS=: read -ra selected < <(
--color "hl:-1:underline,hl+:-1:underline:reverse" \
--disabled --query "$INITIAL_QUERY" \
--bind "change:reload:sleep 0.1; $RG_PREFIX {q} || true" \
--bind "ctrl-f:unbind(change,ctrl-f)+change-prompt(2. fzf> )+enable-search+clear-query+rebind(ctrl-r)" \
--bind "ctrl-r:unbind(ctrl-r)+change-prompt(1. ripgrep> )+disable-search+reload($RG_PREFIX {q} || true)+rebind(change,ctrl-f)" \
--prompt '1. Ripgrep> ' \
--bind "ctrl-f:unbind(change,ctrl-f)+change-prompt(2. fzf> )+enable-search+rebind(ctrl-r)+transform-query(echo {q} > /tmp/rg-fzf-r; cat /tmp/rg-fzf-f)" \
--bind "ctrl-r:unbind(ctrl-r)+change-prompt(1. ripgrep> )+disable-search+reload($RG_PREFIX {q} || true)+rebind(change,ctrl-f)+transform-query(echo {q} > /tmp/rg-fzf-f; cat /tmp/rg-fzf-r)" \
--bind "start:unbind(ctrl-r)" \
--prompt '1. ripgrep> ' \
--delimiter : \
--header '╱ CTRL-R (Ripgrep mode) ╱ CTRL-F (fzf mode) ╱' \
--header '╱ CTRL-R (ripgrep mode) ╱ CTRL-F (fzf mode) ╱' \
--preview 'bat --color=always {1} --highlight-line {2}' \
--preview-window 'up,60%,border-bottom,+{2}+3/3,~3'
)
[ -n "${selected[0]}" ] && vim "${selected[0]}" "+${selected[1]}"
```
- To restore the query string when switching between modes, we store the
current query in `/tmp/rg-fzf-{r,f}` files and restore the query using
`transform-query` action which was added in [fzf 0.36.0][0.36.0].
- Also note that we unbind `ctrl-r` binding on `start` event which is
triggered once when fzf starts.
[0.30.0]: https://github.com/junegunn/fzf/blob/master/CHANGELOG.md#0300
[0.36.0]: https://github.com/junegunn/fzf/blob/master/CHANGELOG.md#0360
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