chore: compatible with multiple keyboard layouts

src/main/kotlin/app/termora/TermoraFrame.kt

@@ -251,6 +251,7 @@ class TermoraFrame : JFrame(), DataProvider {
 
     }
 
+    @Suppress("CascadeIf")
     private fun registerKeyStroke(
         actionMap: ActionMap,
         inputMap: InputMap,
@@ -259,7 +260,18 @@ class TermoraFrame : JFrame(), DataProvider {
     ) {
         val keyShortcutActionId = "KeyShortcutAction_${randomUUID()}"
         actionMap.put(keyShortcutActionId, redirectAction(actionIds))
+
+        // https://github.com/TermoraDev/termora/issues/902
+        val plusKeys = mutableSetOf(KeyEvent.VK_PLUS, KeyEvent.VK_EQUALS, KeyEvent.VK_ADD)
+        if (plusKeys.contains(keyStroke.keyCode)) {
+            plusKeys.remove(keyStroke.keyCode)
+            for (keyCode in plusKeys) {
+                inputMap.put(KeyStroke.getKeyStroke(keyCode, keyStroke.modifiers), keyShortcutActionId)
+            }
+        }
+
         inputMap.put(keyStroke, keyShortcutActionId)
+
     }
 
     private fun redirectAction(actionIds: List<String>): Action {

src/main/kotlin/app/termora/keymap/KeyShortcut.kt

@@ -8,6 +8,7 @@ import javax.swing.KeyStroke
 class KeyShortcut(val keyStroke: KeyStroke) : Shortcut() {
 
     companion object {
+        @Suppress("CascadeIf")
         fun toHumanText(keyStroke: KeyStroke): String {
 
             var text = keyStroke.toString()
@@ -22,6 +23,8 @@ class KeyShortcut(val keyStroke: KeyStroke) : Shortcut() {
                 text = text.replace("EQUALS", "+")
             } else if (keyStroke.keyCode == KeyEvent.VK_MINUS) {
                 text = text.replace("MINUS", "-")
+            } else if (keyStroke.keyCode == KeyEvent.VK_PLUS) {
+                text = text.replace("PLUS", "+")
             }
 
             text = text.toCharArray().joinToString(" + ")

src/main/kotlin/app/termora/keymap/Keymap.kt

@@ -3,6 +3,7 @@ package app.termora.keymap
 import app.termora.Application.ohMyJson
 import app.termora.randomUUID
 import kotlinx.serialization.json.*
+import java.awt.event.KeyEvent
 import javax.swing.KeyStroke
 
 open class Keymap(
@@ -103,9 +104,26 @@ open class Keymap(
     open fun getActionIds(shortcut: Shortcut): List<String> {
         val actionIds = mutableListOf<String>()
         shortcuts[shortcut]?.let { actionIds.addAll(it) }
+
+
+        // https://github.com/TermoraDev/termora/issues/902
+        if (actionIds.isEmpty()) {
+            if (shortcut is KeyShortcut) {
+                val plusKeys = mutableSetOf(KeyEvent.VK_PLUS, KeyEvent.VK_EQUALS, KeyEvent.VK_ADD)
+                if (plusKeys.contains(shortcut.keyStroke.keyCode)) {
+                    plusKeys.remove(shortcut.keyStroke.keyCode)
+                    for (keyCode in plusKeys) {
+                        val c = KeyShortcut(KeyStroke.getKeyStroke(keyCode, shortcut.keyStroke.modifiers))
+                        shortcuts[c]?.let { actionIds.addAll(it) }
+                    }
+                }
+            }
+        }
+
         if (actionIds.isEmpty()) {
             parent?.getActionIds(shortcut)?.let { actionIds.addAll(it) }
         }
+
         return actionIds
     }
 

src/main/kotlin/app/termora/keymap/KeymapPanel.kt

@@ -50,6 +50,8 @@ class KeymapPanel : JPanel(BorderLayout()) {
 
         allowKeyCodes.add(KeyEvent.VK_EQUALS)
         allowKeyCodes.add(KeyEvent.VK_MINUS)
+        // https://github.com/TermoraDev/termora/issues/902
+        allowKeyCodes.add(KeyEvent.VK_PLUS)
 
 
         copyBtn.toolTipText = I18n.getString("termora.welcome.contextmenu.copy")