Add configuration for GNOME

.local/bin/key-bindings

@@ -0,0 +1,78 @@
+#!/bin/sh
+
+# Show the key bindings from ~/.config/gnome-settings/key-bindings.ini,
+# one binding per line, flattened from the comment tables in that file
+#
+# The key column comes first and the search input is prefilled with "^",
+# so that a typed pattern only matches the key column
+
+set -eu
+
+
+INI="${XDG_CONFIG_HOME:-$HOME/.config}/gnome-settings/key-bindings.ini"
+
+
+awk -F '|' '
+    /^# .*\|/ {
+        sub(/^# ?/, "")
+        for (i = 1; i <= NF; i++) gsub(/^[ \t]+|[ \t]+$/, "", $i)
+        key = $1
+
+        if (key == "Key(s)") {  # Header of the <Super> table
+            mode = "layers"
+            for (i = 2; i <= NF; i++) mod[i] = $i
+            next
+        }
+        if (key == "Key") {  # Header of the browser table
+            mode = "browser"
+            next
+        }
+        if (mode == "" || key ~ /^[-+]+$/) next
+
+        # Every line starts with a layer rank used by `sort` below:
+        # 1 <Super>, 2 <Super><Shift>, 3 <Super><Control>,
+        # 4 <Super><Alt>, 5 <Super><Alt><Shift>, 6 browser bindings
+
+        if (mode == "browser") {
+            if (key == "") next
+            k = split(key, parts, ">")
+            line[++n] = sprintf("6 %-17s %-20s %s: %s", parts[k],
+                substr(key, 1, length(key) - length(parts[k])), $2, $3)
+            next
+        }
+
+        if (key == "") {  # Row without a key => prefix or continuation
+            for (i = 2; i <= NF; i++) {
+                cell = $i
+                if (cell == "") continue
+                if (cell ~ /^\.\.\./) {  # Continues the row above
+                    sub(/^\.\.\. */, "", cell)
+                    sub(/ \.\.\.$/, "", line[last[i]])
+                    line[last[i]] = line[last[i]] " " cell
+                } else {  # Prefix for the rows below
+                    sub(/ \.\.\.$/, "", cell)
+                    prefix[i] = cell
+                }
+            }
+            next
+        }
+
+        for (i = 2; i <= NF; i++) {
+            cell = $i
+            if (cell == "") continue
+            if (cell ~ /^\.\.\./) {
+                sub(/^\.\.\. */, "", cell)
+                cell = prefix[i] " " cell
+            }
+            line[++n] = sprintf("%d %-17s %-20s %s", i - 1, key, mod[i], cell)
+            last[i] = n
+        }
+    }
+
+    END { for (i = 1; i <= n; i++) print line[i] }
+' "$INI" \
+    | LC_ALL=C sort -s -f -k2,2 -k1,1n \
+    | cut -d ' ' -f 2- \
+    | rofi -dmenu -i -p keys -no-custom -matching regex -filter '^' -no-sort \
+        -theme-str '* { font: "FiraCode Nerd Font 10"; } window { width: 60em; } listview { lines: 20; }' \
+    >/dev/null