WIP

build.gradle.kts

@@ -4,23 +4,26 @@ import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
 plugins {
   kotlin("jvm") version "1.9.10"
-  id("org.jetbrains.intellij") version "1.16.1"
+  id("org.jetbrains.intellij") version "1.17.3"
 }
 
 group = "org.acejump"
-version = "chylex-16"
+version = "chylex-21"
 
 repositories {
   mavenCentral()
 }
 
 intellij {
-  version.set("2023.3")
+  version.set("2024.2")
   updateSinceUntilBuild.set(false)
-  plugins.add("IdeaVIM:chylex-22")
+  
+  plugins.add("IdeaVIM:chylex-40")
+  plugins.add("com.intellij.classic.ui:242.20224.159")
   
   pluginsRepositories {
     custom("https://intellij.chylex.com")
+    marketplace()
   }
 }
 
@@ -33,7 +36,7 @@ dependencies {
 }
 
 tasks.patchPluginXml {
-  sinceBuild.set("233")
+  sinceBuild.set("242")
 }
 
 tasks.buildSearchableOptions {

src/main/kotlin/org/acejump/AceUtil.kt

@@ -7,8 +7,6 @@ import com.intellij.openapi.project.Project
 import com.intellij.util.IncorrectOperationException
 import it.unimi.dsi.fastutil.ints.IntArrayList
 
-annotation class ExternalUsage
-
 /**
  * Returns an immutable version of the currently edited document.
  */
@@ -52,57 +50,6 @@ fun CharSequence.countMatchingCharacters(selfOffset: Int, otherText: String): In
   return i
 }
 
-/**
- * Determines which characters form a "word" for the purposes of functions below.
- */
-val Char.isWordPart
-  get() = this in 'a'..'z' || this.isJavaIdentifierPart()
-
-/**
- * Finds index of the first character in a word.
- */
-inline fun CharSequence.wordStart(pos: Int, isPartOfWord: (Char) -> Boolean = Char::isWordPart): Int {
-  var start = pos
-  
-  while (start > 0 && isPartOfWord(this[start - 1])) {
-    --start
-  }
-  
-  return start
-}
-
-/**
- * Finds index of the last character in a word.
- */
-inline fun CharSequence.wordEnd(pos: Int, isPartOfWord: (Char) -> Boolean = Char::isWordPart): Int {
-  var end = pos
-  val limit = length - 1
-  
-  while (end < limit && isPartOfWord(this[end + 1])) {
-    ++end
-  }
-  
-  return end
-}
-
-/**
- * Finds index of the first word character following a sequence of non-word characters following the end of a word.
- */
-inline fun CharSequence.wordEndPlus(pos: Int, isPartOfWord: (Char) -> Boolean = Char::isWordPart): Int {
-  var end = this.wordEnd(pos, isPartOfWord)
-  val limit = length - 1
-  
-  while (end < limit && !isPartOfWord(this[end + 1])) {
-    ++end
-  }
-  
-  if (end < limit && isPartOfWord(this[end + 1])) {
-    ++end
-  }
-  
-  return end
-}
-
 fun MutableMap<Editor, IntArrayList>.clone(): MutableMap<Editor, IntArrayList> {
   val clone = HashMap<Editor, IntArrayList>(size)
   

src/main/kotlin/org/acejump/action/AceVimAction.kt

@@ -1,5 +1,6 @@
 package org.acejump.action
 
+import com.intellij.openapi.actionSystem.ActionUpdateThread
 import com.intellij.openapi.actionSystem.AnActionEvent
 import com.intellij.openapi.actionSystem.CommonDataKeys
 import com.intellij.openapi.application.ApplicationManager
@@ -10,13 +11,12 @@ import com.maddyhome.idea.vim.action.change.change.ChangeVisualAction
 import com.maddyhome.idea.vim.action.change.delete.DeleteVisualAction
 import com.maddyhome.idea.vim.action.copy.YankVisualAction
 import com.maddyhome.idea.vim.api.injector
-import com.maddyhome.idea.vim.command.MappingMode.OP_PENDING
 import com.maddyhome.idea.vim.command.OperatorArguments
 import com.maddyhome.idea.vim.group.visual.vimSetSelection
 import com.maddyhome.idea.vim.helper.inVisualMode
 import com.maddyhome.idea.vim.helper.vimSelectionStart
-import com.maddyhome.idea.vim.helper.vimStateMachine
 import com.maddyhome.idea.vim.newapi.vim
+import com.maddyhome.idea.vim.state.mode.Mode
 import com.maddyhome.idea.vim.state.mode.SelectionType
 import org.acejump.boundaries.StandardBoundaries.AFTER_CARET
 import org.acejump.boundaries.StandardBoundaries.BEFORE_CARET
@@ -52,12 +52,11 @@ sealed class AceVimAction : DumbAwareAction() {
           }
           else {
             val vim = editor.vim
-            val commandState = vim.vimStateMachine
-            if (commandState.isOperatorPending) {
-              val key = commandState.commandBuilder.keys.singleOrNull()?.keyChar
+            val keyHandler = KeyHandler.getInstance()
+            if (keyHandler.isOperatorPending(vim.mode, keyHandler.keyHandlerState)) {
+              val key = keyHandler.keyHandlerState.commandBuilder.keys.singleOrNull()?.keyChar
               
-              commandState.reset()
-              KeyHandler.getInstance().fullReset(vim)
+              keyHandler.fullReset(vim)
               
               AceVimUtil.enterVisualMode(vim, SelectionType.CHARACTER_WISE)
               caret.vim.vimSetSelection(caret.offset, initialOffset, moveCaretToSelectionEnd = true)
@@ -72,15 +71,16 @@ sealed class AceVimAction : DumbAwareAction() {
               if (action != null) {
                 ApplicationManager.getApplication().invokeLater {
                   WriteAction.run<Nothing> {
-                    commandState.commandBuilder.pushCommandPart(action)
+                    keyHandler.keyHandlerState.commandBuilder.pushCommandPart(action)
                     
-                    val cmd = commandState.commandBuilder.buildCommand()
-                    val operatorArguments = OperatorArguments(commandState.mappingState.mappingMode == OP_PENDING, cmd.rawCount, commandState.mode)
+                    val cmd = keyHandler.keyHandlerState.commandBuilder.buildCommand()
+                    val operatorArguments = OperatorArguments(vim.mode is Mode.OP_PENDING, cmd.rawCount, injector.vimState.mode)
                     
-                    commandState.executingCommand = cmd
+                    injector.vimState.executingCommand = cmd
                     injector.actionExecutor.executeVimAction(vim, action, context, operatorArguments)
-                    // TODO does not update status
                   }
+                  
+                  keyHandler.reset(vim)
                 }
               }
             }
@@ -168,6 +168,10 @@ sealed class AceVimAction : DumbAwareAction() {
       action.presentation.isEnabled = action.getData(CommonDataKeys.EDITOR) != null
     }
     
+    override fun getActionUpdateThread(): ActionUpdateThread {
+      return ActionUpdateThread.BGT
+    }
+    
     override fun actionPerformed(e: AnActionEvent) {
       val editor = e.getData(CommonDataKeys.EDITOR) ?: return
       val session = SessionManager.start(editor, AceVimMode.JumpAllEditors.getJumpEditors(editor))

src/main/kotlin/org/acejump/config/AceConfig.kt

@@ -20,8 +20,10 @@ class AceConfig : PersistentStateComponent<AceSettings> {
     
     val layout get() = settings.layout
     val minQueryLength get() = settings.minQueryLength
+    val editorFadeOpacity get() = settings.editorFadeOpacity
     val jumpModeColor get() = settings.jumpModeColor
-    val tagForegroundColor get() = settings.tagForegroundColor
+    val tagForegroundColor1 get() = settings.tagForegroundColor1
+    val tagForegroundColor2 get() = settings.tagForegroundColor2
     val searchHighlightColor get() = settings.searchHighlightColor
   }
   

src/main/kotlin/org/acejump/config/AceConfigurable.kt

@@ -13,20 +13,22 @@ class AceConfigurable : Configurable {
   
   override fun isModified() =
     panel.allowedChars != settings.allowedChars ||
-      panel.prefixChars != settings.prefixChars ||
       panel.keyboardLayout != settings.layout ||
       panel.minQueryLengthInt != settings.minQueryLength ||
+      panel.editorFadeOpacityPercent != settings.editorFadeOpacity ||
       panel.jumpModeColor != settings.jumpModeColor ||
-      panel.tagForegroundColor != settings.tagForegroundColor ||
+      panel.tagForegroundColor1 != settings.tagForegroundColor1 ||
+      panel.tagForegroundColor2 != settings.tagForegroundColor2 ||
       panel.searchHighlightColor != settings.searchHighlightColor
   
   override fun apply() {
     settings.allowedChars = panel.allowedChars
-    settings.prefixChars = panel.prefixChars
     settings.layout = panel.keyboardLayout
     settings.minQueryLength = panel.minQueryLengthInt ?: settings.minQueryLength
+    settings.editorFadeOpacity = panel.editorFadeOpacityPercent
     panel.jumpModeColor?.let { settings.jumpModeColor = it }
-    panel.tagForegroundColor?.let { settings.tagForegroundColor = it }
+    panel.tagForegroundColor1?.let { settings.tagForegroundColor1 = it }
+    panel.tagForegroundColor2?.let { settings.tagForegroundColor2 = it }
     panel.searchHighlightColor?.let { settings.searchHighlightColor = it }
     KeyLayoutCache.reset(settings)
   }

src/main/kotlin/org/acejump/config/AceSettings.kt

@@ -8,14 +8,17 @@ import java.awt.Color
 data class AceSettings(
   var layout: KeyLayout = QWERTY,
   var allowedChars: String = layout.allChars,
-  var prefixChars: String = ";",
   var minQueryLength: Int = 1,
+  var editorFadeOpacity: Int = 70,
   
   @OptionTag("jumpModeRGB", converter = ColorConverter::class)
   var jumpModeColor: Color = Color(0xFFFFFF),
   
   @OptionTag("tagForegroundRGB", converter = ColorConverter::class)
-  var tagForegroundColor: Color = Color(0xFFFFFF),
+  var tagForegroundColor1: Color = Color(0xFFFFFF),
+  
+  @OptionTag("tagForeground2RGB", converter = ColorConverter::class)
+  var tagForegroundColor2: Color = Color(0xFFFFFF),
   
   @OptionTag("searchHighlightRGB", converter = ColorConverter::class)
   var searchHighlightColor: Color = Color(0x008299),

src/main/kotlin/org/acejump/config/AceSettingsPanel.kt

@@ -2,18 +2,21 @@ package org.acejump.config
 
 import com.intellij.openapi.ui.ComboBox
 import com.intellij.ui.ColorPanel
+import com.intellij.ui.components.JBSlider
 import com.intellij.ui.components.JBTextArea
 import com.intellij.ui.components.JBTextField
-import com.intellij.ui.layout.Cell
-import com.intellij.ui.layout.GrowPolicy.MEDIUM_TEXT
-import com.intellij.ui.layout.GrowPolicy.SHORT_TEXT
-import com.intellij.ui.layout.panel
+import com.intellij.ui.dsl.builder.COLUMNS_LARGE
+import com.intellij.ui.dsl.builder.COLUMNS_SHORT
+import com.intellij.ui.dsl.builder.columns
+import com.intellij.ui.dsl.builder.panel
 import org.acejump.input.KeyLayout
 import java.awt.Color
 import java.awt.Font
+import java.util.Hashtable
 import javax.swing.JCheckBox
-import javax.swing.JComponent
+import javax.swing.JLabel
 import javax.swing.JPanel
+import javax.swing.JSlider
 import javax.swing.text.JTextComponent
 import kotlin.reflect.KProperty
 
@@ -23,70 +26,89 @@ import kotlin.reflect.KProperty
 @Suppress("UsePropertyAccessSyntax")
 internal class AceSettingsPanel {
   private val tagAllowedCharsField = JBTextField()
-  private val tagPrefixCharsField = JBTextField()
   private val keyboardLayoutCombo = ComboBox<KeyLayout>()
   private val keyboardLayoutArea = JBTextArea().apply { isEditable = false }
   private val minQueryLengthField = JBTextField()
+  private val editorFadeOpacitySlider = JBSlider(0, 10).apply {
+    labelTable = Hashtable((0..10).associateWith { JLabel("${it * 10}") })
+    paintTrack = true
+    paintLabels = true
+    paintTicks = true
+    minorTickSpacing = 1
+    majorTickSpacing = 1
+  }
   private val jumpModeColorWheel = ColorPanel()
-  private val tagForegroundColorWheel = ColorPanel()
+  private val tagForeground1ColorWheel = ColorPanel()
+  private val tagForeground2ColorWheel = ColorPanel()
   private val searchHighlightColorWheel = ColorPanel()
   
   init {
     tagAllowedCharsField.apply { font = Font("monospaced", font.style, font.size) }
-    tagPrefixCharsField.apply { font = Font("monospaced", font.style, font.size) }
     keyboardLayoutArea.apply { font = Font("monospaced", font.style, font.size) }
     keyboardLayoutCombo.setupEnumItems { keyChars = it.rows.joinToString("\n") }
   }
   
   internal val rootPanel: JPanel = panel {
-    fun Cell.short(component: JComponent) = component(growPolicy = SHORT_TEXT)
-    fun Cell.medium(component: JComponent) = component(growPolicy = MEDIUM_TEXT)
-    
-    titledRow("Characters and Layout") {
-      row("Allowed characters in tags:") { medium(tagAllowedCharsField) }
-      row("Allowed prefix characters in tags:") { medium(tagPrefixCharsField) }
-      row("Keyboard layout:") { short(keyboardLayoutCombo) }
-      row("Keyboard design:") { short(keyboardLayoutArea) }
+    group("Characters and Layout") {
+      row("Allowed characters in tags:") { cell(tagAllowedCharsField).columns(COLUMNS_LARGE) }
+      row("Keyboard layout:") { cell(keyboardLayoutCombo).columns(COLUMNS_SHORT) }
+      row("Keyboard design:") { cell(keyboardLayoutArea).columns(COLUMNS_SHORT) }
     }
     
-    titledRow("Behavior") {
-      row("Minimum typed characters (1-10):") { short(minQueryLengthField) }
+    group("Behavior") {
+      row("Minimum typed characters (1-10):") { cell(minQueryLengthField).columns(COLUMNS_SHORT) }
     }
     
-    titledRow("Colors") {
-      row("Caret background:") { short(jumpModeColorWheel) }
-      row("Tag foreground:") { short(tagForegroundColorWheel) }
-      row("Search highlight:") { short(searchHighlightColorWheel) }
+    group("Colors") {
+      row("Caret background:") {
+        cell(jumpModeColorWheel)
+      }
+      row("Tag foreground:") {
+        cell(tagForeground1ColorWheel)
+        cell(tagForeground2ColorWheel)
+      }
+      row("Search highlight:") {
+        cell(searchHighlightColorWheel)
+      }
+      row("Editor fade opacity (%):") {
+        cell(editorFadeOpacitySlider)
+      }
     }
   }
   
   // Property-to-property delegation: https://stackoverflow.com/q/45074596/1772342
   internal var allowedChars by tagAllowedCharsField
-  internal var prefixChars by tagPrefixCharsField
   internal var keyboardLayout by keyboardLayoutCombo
   internal var keyChars by keyboardLayoutArea
   internal var minQueryLength by minQueryLengthField
+  internal var editorFadeOpacity by editorFadeOpacitySlider
   internal var jumpModeColor by jumpModeColorWheel
-  internal var tagForegroundColor by tagForegroundColorWheel
+  internal var tagForegroundColor1 by tagForeground1ColorWheel
+  internal var tagForegroundColor2 by tagForeground2ColorWheel
   internal var searchHighlightColor by searchHighlightColorWheel
   
   internal var minQueryLengthInt
     get() = minQueryLength.toIntOrNull()?.coerceIn(1, 10)
     set(value) { minQueryLength = value.toString() }
   
+  internal var editorFadeOpacityPercent
+    get() = editorFadeOpacity * 10
+    set(value) { editorFadeOpacity = value / 10 }
+  
   fun reset(settings: AceSettings) {
     allowedChars = settings.allowedChars
-    prefixChars = settings.prefixChars
     keyboardLayout = settings.layout
     minQueryLength = settings.minQueryLength.toString()
+    editorFadeOpacityPercent = settings.editorFadeOpacity
     jumpModeColor = settings.jumpModeColor
-    tagForegroundColor = settings.tagForegroundColor
+    tagForegroundColor1 = settings.tagForegroundColor1
+    tagForegroundColor2 = settings.tagForegroundColor2
     searchHighlightColor = settings.searchHighlightColor
   }
   
   // Removal pending support for https://youtrack.jetbrains.com/issue/KT-8575
   
-  private operator fun JTextComponent.getValue(a: AceSettingsPanel, p: KProperty<*>) = text.toLowerCase()
+  private operator fun JTextComponent.getValue(a: AceSettingsPanel, p: KProperty<*>) = text.lowercase()
   private operator fun JTextComponent.setValue(a: AceSettingsPanel, p: KProperty<*>, s: String) = setText(s)
   
   private operator fun ColorPanel.getValue(a: AceSettingsPanel, p: KProperty<*>) = selectedColor
@@ -95,6 +117,9 @@ internal class AceSettingsPanel {
   private operator fun JCheckBox.getValue(a: AceSettingsPanel, p: KProperty<*>) = isSelected
   private operator fun JCheckBox.setValue(a: AceSettingsPanel, p: KProperty<*>, selected: Boolean) = setSelected(selected)
   
+  private operator fun JSlider.getValue(a: AceSettingsPanel, p: KProperty<*>) = value
+  private operator fun JSlider.setValue(a: AceSettingsPanel, p: KProperty<*>, value: Int) = setValue(value)
+  
   private operator fun <T> ComboBox<T>.getValue(a: AceSettingsPanel, p: KProperty<*>) = selectedItem as T
   private operator fun <T> ComboBox<T>.setValue(a: AceSettingsPanel, p: KProperty<*>, item: T) = setSelectedItem(item)
   

src/main/kotlin/org/acejump/input/KeyLayout.kt

@@ -4,21 +4,47 @@ package org.acejump.input
  * Defines common keyboard layouts. Each layout has a key priority order, based on each key's distance from the home row and how
  * ergonomically difficult they are to press.
  */
-@Suppress("unused")
-enum class KeyLayout(internal val rows: Array<String>, priority: String) {
+@Suppress("unused", "SpellCheckingInspection")
+enum class KeyLayout(
+  internal val rows: Array<String>,
+  priority: String,
+  private val characterSides: Pair<Set<Char>, Set<Char>> = Pair(emptySet(), emptySet()),
+  internal val characterRemapping: Map<Char, Char> = emptyMap(),
+) {
   COLEMK(arrayOf("1234567890", "qwfpgjluy", "arstdhneio", "zxcvbkm"), priority = "tndhseriaovkcmbxzgjplfuwyq5849673210"),
   WORKMN(arrayOf("1234567890", "qdrwbjfup", "ashtgyneoi", "zxmcvkl"), priority = "tnhegysoaiclvkmxzwfrubjdpq5849673210"),
   DVORAK(arrayOf("1234567890", "pyfgcrl", "aoeuidhtns", "qjkxbmwvz"), priority = "uhetidonasxkbjmqwvzgfycprl5849673210"),
   QWERTY(arrayOf("1234567890", "qwertyuiop", "asdfghjkl", "zxcvbnm"), priority = "fjghdkslavncmbxzrutyeiwoqp5849673210"),
   QWERTZ(arrayOf("1234567890", "qwertzuiop", "asdfghjkl", "yxcvbnm"), priority = "fjghdkslavncmbxyrutzeiwoqp5849673210"),
+  QWERTZ_CZ(
+    arrayOf("1234567890", "qwertzuiop", "asdfghjkl", "yxcvbnm"),
+    priority = "fjghdkslavncmbxyrutzeiwoqp5849673210",
+    characterSides = sides("", ""),
+    characterRemapping = mapOf(
+      '+' to '1',
+      'ě' to '2',
+      'š' to '3',
+      'č' to '4',
+      'ř' to '5',
+      'ž' to '6',
+      'ý' to '7',
+      'á' to '8',
+      'í' to '9',
+      'é' to '0'
+    )
+  ),
   QGMLWY(arrayOf("1234567890", "qgmlwyfub", "dstnriaeoh", "zxcvjkp"), priority = "naterisodhvkcpjxzlfmuwygbq5849673210"),
   QGMLWB(arrayOf("1234567890", "qgmlwbyuv", "dstnriaeoh", "zxcfjkp"), priority = "naterisodhfkcpjxzlymuwbgvq5849673210"),
   NORMAN(arrayOf("1234567890", "qwdfkjurl", "asetgynioh", "zxcvbpm"), priority = "tneigysoahbvpcmxzjkufrdlwq5849673210");
   
   internal val allChars = rows.joinToString("").toCharArray().apply(CharArray::sort).joinToString("")
-  internal val allPriorities = priority.mapIndexed { index, char -> char to index }.toMap()
+  private val allPriorities = priority.mapIndexed { index, char -> char to index }.toMap()
   
-  internal inline fun priority(crossinline tagToChar: (String) -> Char): (String) -> Int? {
-    return { allPriorities[tagToChar(it)] }
+  internal fun priority(): (Char) -> Int {
+    return { allPriorities.getOrDefault(it, Int.MAX_VALUE) }
   }
 }
+
+private fun sides(left: String, right: String): Pair<Set<Char>, Set<Char>> {
+  return Pair(left.toCharArray().toSet(), right.toCharArray().toSet())
+}

src/main/kotlin/org/acejump/input/KeyLayoutCache.kt

@@ -7,24 +7,14 @@ import org.acejump.config.AceSettings
  * with repeated keys (ex. FF, JJ) or adjacent keys (ex. GH, UJ).
  */
 internal object KeyLayoutCache {
-  /**
-   * Sorts tags according to current keyboard layout settings, and some predefined rules that force tags with digits, and tags with two
-   * keys far apart, to be sorted after other (easier to type) tags.
-   */
-  lateinit var tagOrder: Comparator<String>
-    private set
-  
-  /**
-   * Returns all possible two key tags, pre-sorted according to [tagOrder].
-   */
-  lateinit var allPossibleTagsLowercase: List<String>
+  lateinit var allowedCharsSorted: List<Char>
     private set
   
   /**
    * Called before any lazily initialized properties are used, to ensure that they are initialized even if the settings are missing.
    */
   fun ensureInitialized(settings: AceSettings) {
-    if (!::tagOrder.isInitialized) {
+    if (!::allowedCharsSorted.isInitialized) {
       reset(settings)
     }
   }
@@ -33,21 +23,17 @@ internal object KeyLayoutCache {
    * Re-initializes cached data according to updated settings.
    */
   fun reset(settings: AceSettings) {
-    tagOrder = compareBy(
-      String::length,
-      settings.layout.priority(String::last)
-    )
+    val allowedCharList = processCharList(settings.allowedChars)
     
-    @Suppress("ConvertLambdaToReference")
-    val allSuffixChars = processCharList(settings.allowedChars).ifEmpty { processCharList(settings.layout.allChars).toList() }
-    val allPrefixChars = processCharList(settings.prefixChars).filterNot(allSuffixChars::contains).plus("")
-    
-    allPossibleTagsLowercase = allSuffixChars
-      .flatMap { suffix -> allPrefixChars.map { prefix -> "$prefix$suffix" } }
-      .sortedWith(tagOrder)
+    allowedCharsSorted = if (allowedCharList.isEmpty()) {
+      processCharList(settings.layout.allChars)
+    }
+    else {
+      allowedCharList.sortedWith(compareBy(settings.layout.priority()))
+    }
   }
   
-  private fun processCharList(charList: String): Set<String> {
-    return charList.toCharArray().map(Char::lowercase).toSet()
+  private fun processCharList(charList: String): List<Char> {
+    return charList.toCharArray().map(Char::lowercaseChar).distinct()
   }
 }

src/main/kotlin/org/acejump/search/SearchProcessor.kt

@@ -11,18 +11,8 @@ import org.acejump.matchesAt
 /**
  * Searches editor text for matches of a [SearchQuery], and updates previous results when the user [refineQuery]s a character.
  */
-class SearchProcessor private constructor(query: SearchQuery, private val results: MutableMap<Editor, IntArrayList>) {
-  companion object {
-    fun fromString(editors: List<Editor>, query: String, boundaries: Boundaries): SearchProcessor {
-      return SearchProcessor(editors, SearchQuery.Literal(query), boundaries)
-    }
-    
-    fun fromRegex(editors: List<Editor>, pattern: String, boundaries: Boundaries): SearchProcessor {
-      return SearchProcessor(editors, SearchQuery.RegularExpression(pattern), boundaries)
-    }
-  }
-  
-  private constructor(editors: List<Editor>, query: SearchQuery, boundaries: Boundaries) : this(query, mutableMapOf()) {
+class SearchProcessor private constructor(query: SearchQuery, val boundaries: Boundaries, private val results: MutableMap<Editor, IntArrayList>) {
+  internal constructor(editors: List<Editor>, query: SearchQuery, boundaries: Boundaries) : this(query, boundaries, mutableMapOf()) {
     val regex = query.toRegex()
     
     if (regex != null) {
@@ -39,7 +29,7 @@ class SearchProcessor private constructor(query: SearchQuery, private val result
           if (highlightEnd > offsetRange.last) {
             break
           }
-          else if (boundaries.isOffsetInside(editor, index)) {
+          else if (boundaries.isOffsetInside(editor, index) && !editor.foldingModel.isOffsetCollapsed(index)) {
             offsets.add(index)
           }
           
@@ -65,7 +55,7 @@ class SearchProcessor private constructor(query: SearchQuery, private val result
       return true
     }
     else {
-      query = SearchQuery.Literal(query.rawText + char)
+      query = query.refine(char)
       removeObsoleteResults()
       return isQueryFinished
     }

src/main/kotlin/org/acejump/search/SearchQuery.kt

@@ -8,6 +8,11 @@ import org.acejump.countMatchingCharacters
 internal sealed class SearchQuery {
   abstract val rawText: String
   
+  /**
+   * Returns a new query with the given character appended.
+   */
+  abstract fun refine(char: Char): SearchQuery
+  
   /**
    * Returns how many characters the search occurrence highlight should cover.
    */
@@ -19,29 +24,37 @@ internal sealed class SearchQuery {
   abstract fun toRegex(): Regex?
   
   /**
-   * Searches for all occurrences of a literal text query. If the first character of the query is lowercase, then the entire query will be
-   * case-insensitive.
-   *
-   * Each occurrence must either match the entire query, or match the query up to a point so that the rest of the query matches the
-   * beginning of a tag at the location of the occurrence.
+   * Searches for all occurrences of a literal text query.
+   * If the first character of the query is lowercase, then the entire query will be case-insensitive,
+   * and only beginnings of words and camel humps will be matched.
    */
   class Literal(override val rawText: String) : SearchQuery() {
     init {
       require(rawText.isNotEmpty())
     }
     
+    override fun refine(char: Char): SearchQuery {
+      return Literal(rawText + char)
+    }
+    
     override fun getHighlightLength(text: CharSequence, offset: Int): Int {
       return text.countMatchingCharacters(offset, rawText)
     }
     
     override fun toRegex(): Regex {
-      val options = mutableSetOf(RegexOption.MULTILINE)
-      
-      if (rawText.first().isLowerCase()) {
-        options.add(RegexOption.IGNORE_CASE)
+      val firstChar = rawText.first()
+      val pattern = if (firstChar.isLowerCase()) {
+        val fullPattern = Regex.escape(rawText)
+        "(?i)$fullPattern"
+      }
+      else {
+        val firstCharUppercasePattern = Regex.escape(firstChar.toString())
+        val firstCharLowercasePattern = Regex.escape(firstChar.lowercase())
+        val remainingPattern = if (rawText.length > 1) Regex.escape(rawText.drop(1)) else ""
+        "(?:$firstCharUppercasePattern|(?<![a-zA-Z])$firstCharLowercasePattern)$remainingPattern"
       }
       
-      return Regex(Regex.escape(rawText), options)
+      return Regex(pattern, setOf(RegexOption.MULTILINE))
     }
   }
   
@@ -51,6 +64,10 @@ internal sealed class SearchQuery {
   class RegularExpression(private val pattern: String) : SearchQuery() {
     override val rawText = ""
     
+    override fun refine(char: Char): SearchQuery {
+      return Literal(char.toString())
+    }
+    
     override fun getHighlightLength(text: CharSequence, offset: Int): Int {
       return 1
     }

src/main/kotlin/org/acejump/search/Tagger.kt

@@ -5,13 +5,10 @@ import com.intellij.openapi.editor.Editor
 import it.unimi.dsi.fastutil.ints.IntList
 import org.acejump.boundaries.EditorOffsetCache
 import org.acejump.boundaries.StandardBoundaries.VISIBLE_ON_SCREEN
-import org.acejump.immutableText
 import org.acejump.input.KeyLayoutCache
-import org.acejump.isWordPart
 import org.acejump.view.TagMarker
 import kotlin.collections.component1
 import kotlin.collections.component2
-import kotlin.math.max
 import kotlin.math.min
 
 /**
@@ -43,7 +40,7 @@ class Tagger(private val editors: List<Editor>, results: Map<Editor, IntList>) {
       .flatMap { (editor, sites) -> sites.map { site -> Tag(editor, site) } }
       .sortedWith(siteOrder(editors, caches))
     
-    tagMap = KeyLayoutCache.allPossibleTagsLowercase.zip(tagSites).toMap()
+    tagMap = generateTags(tagSites).zip(tagSites).toMap()
   }
   
   internal fun type(char: Char): TaggingResult {
@@ -64,6 +61,35 @@ class Tagger(private val editors: List<Editor>, results: Map<Editor, IntList>) {
   }
   
   private companion object {
+    private fun generateTags(tagSites: List<Tag>): List<String> {
+      val allowedChars = KeyLayoutCache.allowedCharsSorted
+      
+      val tags = mutableListOf<String>()
+      var remainingTagCount = tagSites.size
+      
+      outer@ for (i in allowedChars.indices) {
+        val c1 = allowedChars[i]
+        
+        if (remainingTagCount <= allowedChars.size - i) {
+          tags.add(c1.toString())
+          if (--remainingTagCount <= 0) {
+            break@outer
+          }
+        }
+        else {
+          for (c2 in allowedChars) {
+            tags.add("$c1$c2")
+            
+            if (--remainingTagCount <= 0) {
+              break@outer
+            }
+          }
+        }
+      }
+      
+      return tags
+    }
+    
     private fun sortResults(results: Map<Editor, IntList>, caches: Map<Editor, EditorOffsetCache>) {
       for ((editor, offsets) in results) {
         val cache = caches.getValue(editor)
@@ -92,26 +118,24 @@ class Tagger(private val editors: List<Editor>, results: Map<Editor, IntList>) {
         return@Comparator if (aEditorIndex < bEditorIndex) -1 else 1
       }
       
-      val aIsVisible = VISIBLE_ON_SCREEN.isOffsetInside(aEditor, a.offset, caches.getValue(aEditor))
-      val bIsVisible = VISIBLE_ON_SCREEN.isOffsetInside(bEditor, b.offset, caches.getValue(bEditor))
+      val aCaches = caches.getValue(aEditor)
+      val bCaches = caches.getValue(bEditor)
+      
+      val aIsVisible = VISIBLE_ON_SCREEN.isOffsetInside(aEditor, a.offset, aCaches)
+      val bIsVisible = VISIBLE_ON_SCREEN.isOffsetInside(bEditor, b.offset, bCaches)
       if (aIsVisible != bIsVisible) {
         // Sites in immediate view should come first.
         return@Comparator if (aIsVisible) -1 else 1
       }
       
-      val aIsNotWordStart = aEditor.immutableText[max(0, a.offset - 1)].isWordPart
-      val bIsNotWordStart = bEditor.immutableText[max(0, b.offset - 1)].isWordPart
-      if (aIsNotWordStart != bIsNotWordStart) {
-        // Ensure that the first letter of a word is prioritized for tagging.
-        return@Comparator if (bIsNotWordStart) -1 else 1
-      }
+      val aPosition = aCaches.offsetToXY(aEditor, a.offset)
+      val bPosition = bCaches.offsetToXY(bEditor, b.offset)
       
-      when {
-        a.offset < b.offset -> -1
-        a.offset > b.offset -> 1
-        else                -> 0
-      }
+      val caretPosition = editorPriority[0].offsetToXY(editorPriority[0].caretModel.offset)
+      val aDistance = aPosition.distanceSq(caretPosition)
+      val bDistance = bPosition.distanceSq(caretPosition)
+      
+      return@Comparator aDistance.compareTo(bDistance)
     }
-    
   }
 }

src/main/kotlin/org/acejump/session/Session.kt

@@ -128,7 +128,7 @@ class Session(private val mainEditor: Editor, private val jumpEditors: List<Edit
       canvas.setMarkers(emptyList())
     }
     
-    val processor = SearchProcessor.fromRegex(jumpEditors, pattern.regex, defaultBoundary)
+    val processor = SearchProcessor(jumpEditors, SearchQuery.RegularExpression(pattern.regex), defaultBoundary)
     textHighlighter.renderOccurrences(processor.resultsCopy, processor.query)
     
     state = SessionState.SelectTag(actions, jumpEditors, processor)

src/main/kotlin/org/acejump/session/SessionState.kt

@@ -2,7 +2,10 @@ package org.acejump.session
 
 import com.intellij.openapi.editor.Editor
 import org.acejump.boundaries.Boundaries
+import org.acejump.boundaries.StandardBoundaries
+import org.acejump.config.AceConfig
 import org.acejump.search.SearchProcessor
+import org.acejump.search.SearchQuery
 import org.acejump.search.Tagger
 import org.acejump.search.TaggingResult
 
@@ -15,7 +18,7 @@ sealed interface SessionState {
     private val defaultBoundary: Boundaries,
   ) : SessionState {
     override fun type(char: Char): TypeResult {
-      val searchProcessor = SearchProcessor.fromString(jumpEditors, char.toString(), defaultBoundary)
+      val searchProcessor = SearchProcessor(jumpEditors, SearchQuery.Literal(char.toString()), defaultBoundary)
       
       return if (searchProcessor.isQueryFinished) {
         TypeResult.ChangeState(SelectTag(actions, jumpEditors, searchProcessor))
@@ -49,8 +52,8 @@ sealed interface SessionState {
   
   class SelectTag internal constructor(
     private val actions: SessionActions,
-    jumpEditors: List<Editor>,
-    searchProcessor: SearchProcessor,
+    private val jumpEditors: List<Editor>,
+    private val searchProcessor: SearchProcessor,
   ) : SessionState {
     private val tagger = Tagger(jumpEditors, searchProcessor.resultsCopy)
     
@@ -59,7 +62,22 @@ sealed interface SessionState {
     }
     
     override fun type(char: Char): TypeResult {
-      return when (val result = tagger.type(char)) {
+      if (char == ' ') {
+        val query = searchProcessor.query
+        if (query is SearchQuery.Literal) {
+          val newBoundaries = when (searchProcessor.boundaries) {
+            StandardBoundaries.VISIBLE_ON_SCREEN -> StandardBoundaries.AFTER_CARET
+            StandardBoundaries.AFTER_CARET       -> StandardBoundaries.BEFORE_CARET
+            StandardBoundaries.BEFORE_CARET      -> StandardBoundaries.VISIBLE_ON_SCREEN
+            else                                 -> searchProcessor.boundaries
+          }
+          
+          val newSearchProcessor = SearchProcessor(jumpEditors, query, newBoundaries)
+          return TypeResult.ChangeState(SelectTag(actions, jumpEditors, newSearchProcessor))
+        }
+      }
+      
+      return when (val result = tagger.type(AceConfig.layout.characterRemapping.getOrDefault(char, char))) {
         is TaggingResult.Nothing -> TypeResult.Nothing
         is TaggingResult.Accept  -> TypeResult.AcceptTag(result.tag)
         is TaggingResult.Mark    -> {

src/main/kotlin/org/acejump/view/TagCanvas.kt

@@ -5,6 +5,7 @@ import com.intellij.openapi.editor.Editor
 import com.intellij.ui.ColorUtil
 import org.acejump.boundaries.EditorOffsetCache
 import org.acejump.boundaries.StandardBoundaries
+import org.acejump.config.AceConfig
 import java.awt.Graphics
 import java.awt.Graphics2D
 import java.awt.Rectangle
@@ -53,7 +54,7 @@ internal class TagCanvas(private val editor: Editor) : JComponent() {
       return
     }
     
-    g.color = ColorUtil.withAlpha(editor.colorsScheme.defaultBackground, 0.6)
+    g.color = ColorUtil.withAlpha(editor.colorsScheme.defaultBackground, (AceConfig.editorFadeOpacity * 0.01).coerceIn(0.0, 1.0))
     g.fillRect(0, 0, width - 1, height - 1)
     
     if (markers.isEmpty()) {

src/main/kotlin/org/acejump/view/TagFont.kt

@@ -12,7 +12,8 @@ internal class TagFont(editor: Editor) {
   val tagFont: Font = editor.colorsScheme.getFont(EditorFontType.PLAIN)
   val tagCharWidth = editor.component.getFontMetrics(tagFont).charWidth('W')
   
-  val foregroundColor = AceConfig.tagForegroundColor
+  val foregroundColor1 = AceConfig.tagForegroundColor1
+  val foregroundColor2 = AceConfig.tagForegroundColor2
   
   val lineHeight = editor.lineHeight
   val baselineDistance = editor.ascent

src/main/kotlin/org/acejump/view/TagMarker.kt

@@ -12,10 +12,10 @@ import java.awt.Rectangle
  * Describes a 1 or 2 character shortcut that points to a specific character in the editor.
  */
 internal class TagMarker(
-  private val tag: String,
+  private val tag: CharArray,
   val offset: Int
 ) {
-  private val length = tag.length
+  private val length = tag.size
   
   companion object {
     /**
@@ -28,26 +28,7 @@ internal class TagMarker(
      * character ([typedTag]) matches the first [tag] character, only the second [tag] character is displayed.
      */
     fun create(tag: String, offset: Int, typedTag: String): TagMarker {
-      return TagMarker(tag.drop(typedTag.length), offset)
-    }
-    
-    /**
-     * Renders the tag background.
-     */
-    private fun drawHighlight(g: Graphics2D, rect: Rectangle, color: Color) {
-      g.color = color
-      g.translate(0.0, HIGHLIGHT_OFFSET)
-      g.fillRect(rect.x, rect.y, rect.width, rect.height + 1)
-      g.translate(0.0, -HIGHLIGHT_OFFSET)
-    }
-    
-    /**
-     * Renders the tag text.
-     */
-    private fun drawForeground(g: Graphics2D, font: TagFont, point: Point, text: String) {
-      g.color = font.foregroundColor
-      g.font = font.tagFont
-      g.drawString(text, point.x, point.y + font.baselineDistance)
+      return TagMarker(tag.drop(typedTag.length).toCharArray(), offset)
     }
   }
   
@@ -59,12 +40,39 @@ internal class TagMarker(
     val rect = alignTag(editor, cache, font, occupied) ?: return null
     
     drawHighlight(g, rect, editor.colorsScheme.defaultBackground)
-    drawForeground(g, font, rect.location, tag)
+    drawForeground(g, font, rect.location)
     
     occupied.add(rect)
     return rect
   }
   
+  /**
+   * Renders the tag background.
+   */
+  private fun drawHighlight(g: Graphics2D, rect: Rectangle, color: Color) {
+    g.color = color
+    g.translate(0.0, HIGHLIGHT_OFFSET)
+    g.fillRect(rect.x, rect.y, rect.width, rect.height + 1)
+    g.translate(0.0, -HIGHLIGHT_OFFSET)
+  }
+  
+  /**
+   * Renders the tag text.
+   */
+  private fun drawForeground(g: Graphics2D, font: TagFont, point: Point) {
+    val x = point.x
+    val y = point.y + font.baselineDistance
+    
+    g.font = font.tagFont
+    g.color = font.foregroundColor1
+    g.drawChars(tag, 0, 1, x, y)
+    
+    if (tag.size > 1) {
+      g.color = font.foregroundColor2
+      g.drawChars(tag, 1, length - 1, x + font.tagCharWidth, y)
+    }
+  }
+  
   private fun alignTag(editor: Editor, cache: EditorOffsetCache, font: TagFont, occupied: List<Rectangle>): Rectangle? {
     val pos = cache.offsetToXY(editor, offset)
     val rect = Rectangle(pos.x, pos.y, font.tagCharWidth * length, font.lineHeight)