tmuxrdr: tmux-mode plugin

The tmux default prefix bindings herdr has no built-in action for, as a
herdr plugin built on its CLI and socket: break-pane, swap-pane and
rotate-window by pane order (focus behaviour measured on tmux 3.7c),
mark/clear-mark, last-window and switch-client -l (from focus events, per
session), select-window and move-window by index, paste-buffer -p,
display-message in tmux's default format, select-layout -E, kill-pane and
kill-window behind tmux's y/n prompts, a command prompt taking tmux's
commands, clock-mode, show-messages, and automatic-rename.

Also a .gitignore for secrets scoped to tmuxrdr/, leaving herdr's own
untouched.

1 files changed, 25 insertions, 0 deletions

diff --git a/tmuxrdr/plugin/bin/spread-layout b/tmuxrdr/plugin/bin/spread-layout
new file mode 100755
index 00000000..2b40de2a
--- /dev/null
+++ b/tmuxrdr/plugin/bin/spread-layout
@@ -0,0 +1,25 @@
+#!/bin/sh
+# tmux prefix+E (select-layout -E): spread panes out evenly. tmux evens out the
+# current pane and its neighbours; this evens every split in the tab -- each
+# split's ratio becomes its share of the panes along that direction -- over
+# the socket's layout.set_split_ratio, which keeps every pane running. herdr
+# clamps ratios to 0.1-0.9, so past ten panes in a row they cannot be equal.
+. "$(dirname "$0")/../lib.sh"
+
+tab="$(pane_info "$(active_pane)" tab_id)"
+api "{\"id\":\"tmux-mode\",\"method\":\"layout.export\",\"params\":{\"tab_id\":\"$tab\"}}" \
+    | jq -c --arg tab "$tab" '
+        def cells($d): if .type == "split" and .direction == $d
+            then (.first | cells($d)) + (.second | cells($d)) else 1 end;
+        def splits($p): if .type == "split" then
+            .direction as $d
+            | {path: $p, ratio: ((.first | cells($d)) / ((.first | cells($d)) + (.second | cells($d))))},
+              (.first | splits($p + [false])),
+              (.second | splits($p + [true]))
+            else empty end;
+        .result.layout.root | splits([])
+        | {id: "tmux-mode", method: "layout.set_split_ratio",
+           params: {tab_id: $tab, path: .path, ratio: .ratio}}' \
+    | while IFS= read -r req; do
+        api "$req" >/dev/null
+    done