tmux, bash, mgmt fiddling

private_dot_config/private_mgmt/fns/is_latest.bash

@@ -0,0 +1,17 @@
+is_latest() {
+    exe="$1"
+    latest="$2"
+    installed="$3"
+    silent="$4"
+    if ! command -v "$exe" > /dev/null; then
+        diag "$exe not installed; $latest available"
+        return 1
+    elif [ "$latest" = "$installed" ]; then
+        test "$silent" = "silent" || diag "$exe already up to date"
+    elif [ "$latest" = "" ]; then
+        diag "[warn] 'latest' $exe is empty string"
+    else
+        diag "$exe $installed installed, but $latest available"
+        return 1
+    fi
+}