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ADVANCED.md: Add change-preview-window example

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Junegunn Choi 2021-12-24 14:41:47 +09:00
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@ -429,30 +429,34 @@ Admittedly, that was a silly example. Here's a practical one for browsing
Kubernetes pods.
```bash
#!/usr/bin/env bash
read -ra tokens < <(
kubectl get pods --all-namespaces |
fzf --info=inline --layout=reverse --header-lines=1 --border \
pods() {
FZF_DEFAULT_COMMAND="kubectl get pods --all-namespaces" \
fzf --info=inline --layout=reverse --header-lines=1 \
--prompt "$(kubectl config current-context | sed 's/-context$//')> " \
--header $'Press CTRL-O to open log in editor\n\n' \
--bind ctrl-/:toggle-preview \
--bind 'ctrl-o:execute:${EDITOR:-vim} <(kubectl logs --namespace {1} {2}) > /dev/tty' \
--preview-window up,follow \
--preview 'kubectl logs --follow --tail=100000 --namespace {1} {2}' "$@"
)
[ ${#tokens} -gt 1 ] &&
kubectl exec -it --namespace "${tokens[0]}" "${tokens[1]}" -- bash
--header $'╱ Enter (kubectl exec) ╱ CTRL-O (open log in editor) ╱ CTRL-R (reload) ╱\n\n' \
--bind 'ctrl-/:change-preview-window(80%,border-bottom|hidden|)' \
--bind 'enter:execute:kubectl exec -it --namespace {1} {2} -- bash > /dev/tty' \
--bind 'ctrl-o:execute:${EDITOR:-vim} <(kubectl logs --all-containers --namespace {1} {2}) > /dev/tty' \
--bind 'ctrl-r:reload:$FZF_DEFAULT_COMMAND' \
--preview-window up:follow \
--preview 'kubectl logs --follow --all-containers --tail=10000 --namespace {1} {2}' "$@"
}
```
![image](https://user-images.githubusercontent.com/700826/113473547-1d7a4880-94a5-11eb-98ef-9aa6f0ed215a.png)
- The preview window will *"log tail"* the pod
- Holding on to a large amount of log will consume a lot of memory. So we
limited the initial log amount with `--tail=100000`.
- With `execute` binding, you can press CTRL-O to open the log in your editor
without leaving fzf
- Select a pod (with an enter key) to `kubectl exec` into it
limited the initial log amount with `--tail=10000`.
- `execute` bindings allow you to run any command without leaving fzf
- Press enter key on a pod to `kubectl exec` into it
- Press CTRL-O to open the log in your editor
- Press CTRL-R to reload the pod list
- Press CTRL-/ repeatedly to to rotate through a different sets of preview
window options
1. `80%,border-bottom`
1. `hidden`
1. Empty string after `|` translates to the default options from `--preview-window`
Key bindings for git objects
----------------------------