Set version to chylex-25

Search results are tested for visibility on the screen. There is already an optimization that only checks results on visible lines, but the number of offset-to-XY conversions still scales linearly with the number of results, which can be very large in files with long lines.

A simple observation is that every line has a first and last offset that is visible on the screen (which may be different for each line due to proportional fonts).

This commit caches the visible offset range for every line involved in one search query, so testing visibility of a search result becomes a check if its offset is inside its line's visible offset range. Finding the visible offset range requires two XY-to-offset conversions per line, so the total number of conversions is bounded by the number of lines that can fit on the screen.

The worst case for this optimization is when every line has exactly one search result; before, this would lead to one offset-to-XY conversion per line, whereas now it leads to two XY-to-offset conversions per line. However, the maximum number of conversions is twice the number of visible lines, which will generally be very small.

build.gradle.kts

@@ -8,7 +8,7 @@ plugins {
 }
 
 group = "org.acejump"
-version = "chylex-21"
+version = "chylex-25"
 
 repositories {
   mavenCentral()
@@ -18,7 +18,7 @@ intellij {
   version.set("2024.2")
   updateSinceUntilBuild.set(false)
   
-  plugins.add("IdeaVIM:chylex-40")
+  plugins.add("IdeaVIM:chylex-41")
   plugins.add("com.intellij.classic.ui:242.20224.159")
   
   pluginsRepositories {

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

@@ -16,7 +16,7 @@ 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.newapi.vim
-import com.maddyhome.idea.vim.state.mode.Mode
+import com.maddyhome.idea.vim.state.mode.Mode.OP_PENDING
 import com.maddyhome.idea.vim.state.mode.SelectionType
 import org.acejump.boundaries.StandardBoundaries.AFTER_CARET
 import org.acejump.boundaries.StandardBoundaries.BEFORE_CARET
@@ -52,8 +52,8 @@ sealed class AceVimAction : DumbAwareAction() {
           }
           else {
             val vim = editor.vim
-            val keyHandler = KeyHandler.getInstance()
-            if (keyHandler.isOperatorPending(vim.mode, keyHandler.keyHandlerState)) {
+            if (vim.mode is OP_PENDING) {
+              val keyHandler = KeyHandler.getInstance()
               val key = keyHandler.keyHandlerState.commandBuilder.keys.singleOrNull()?.keyChar
               
               keyHandler.fullReset(vim)
@@ -71,10 +71,10 @@ sealed class AceVimAction : DumbAwareAction() {
               if (action != null) {
                 ApplicationManager.getApplication().invokeLater {
                   WriteAction.run<Nothing> {
-                    keyHandler.keyHandlerState.commandBuilder.pushCommandPart(action)
+                    keyHandler.keyHandlerState.commandBuilder.addAction(action)
                     
                     val cmd = keyHandler.keyHandlerState.commandBuilder.buildCommand()
-                    val operatorArguments = OperatorArguments(vim.mode is Mode.OP_PENDING, cmd.rawCount, injector.vimState.mode)
+                    val operatorArguments = OperatorArguments(vim.mode is OP_PENDING, cmd.rawCount, injector.vimState.mode)
                     
                     injector.vimState.executingCommand = cmd
                     injector.actionExecutor.executeVimAction(vim, action, context, operatorArguments)

src/main/kotlin/org/acejump/boundaries/EditorOffsetCache.kt

@@ -18,6 +18,11 @@ sealed class EditorOffsetCache {
    */
   abstract fun visibleArea(editor: Editor): Pair<Point, Point>
   
+  /**
+   * Returns whether the offset is in the visible area rectangle.
+   */
+  abstract fun isVisible(editor: Editor, offset: Int): Boolean
+  
   /**
    * Returns the editor offset at the provided pixel coordinate.
    */
@@ -36,6 +41,7 @@ sealed class EditorOffsetCache {
   
   private class Cache : EditorOffsetCache() {
     private var visibleArea: Pair<Point, Point>? = null
+    private val lineToVisibleOffsetRange = Int2ObjectOpenHashMap<IntRange>()
     private val pointToOffset = Object2IntOpenHashMap<Point>().apply { defaultReturnValue(-1) }
     private val offsetToPoint = Int2ObjectOpenHashMap<Point>()
     
@@ -43,6 +49,24 @@ sealed class EditorOffsetCache {
       return visibleArea ?: Uncached.visibleArea(editor).also { visibleArea = it }
     }
     
+    override fun isVisible(editor: Editor, offset: Int): Boolean {
+      val visualLine = editor.offsetToVisualLine(offset, false)
+      
+      var visibleRange = lineToVisibleOffsetRange.get(visualLine)
+      if (visibleRange == null) {
+        val (topLeft, bottomRight) = visibleArea(editor)
+        val lineY = editor.visualLineToY(visualLine)
+        
+        val firstVisibleOffset = xyToOffset(editor, Point(topLeft.x, lineY))
+        val lastVisibleOffset = xyToOffset(editor, Point(bottomRight.x, lineY))
+        
+        visibleRange = firstVisibleOffset..lastVisibleOffset
+        lineToVisibleOffsetRange.put(visualLine, visibleRange)
+      }
+      
+      return offset in visibleRange
+    }
+    
     override fun xyToOffset(editor: Editor, pos: Point): Int {
       val offset = pointToOffset.getInt(pos)
       
@@ -51,7 +75,6 @@ sealed class EditorOffsetCache {
       }
       
       return Uncached.xyToOffset(editor, pos).also {
-        @Suppress("ReplacePutWithAssignment")
         pointToOffset.put(pos, it)
       }
     }
@@ -64,7 +87,6 @@ sealed class EditorOffsetCache {
       }
       
       return Uncached.offsetToXY(editor, offset).also {
-        @Suppress("ReplacePutWithAssignment")
         offsetToPoint.put(offset, it)
       }
     }
@@ -80,6 +102,15 @@ sealed class EditorOffsetCache {
       )
     }
     
+    override fun isVisible(editor: Editor, offset: Int): Boolean {
+      val (topLeft, bottomRight) = visibleArea(editor)
+      val pos = offsetToXY(editor, offset)
+      val x = pos.x
+      val y = pos.y
+      
+      return x >= topLeft.x && y >= topLeft.y && x <= bottomRight.x && y <= bottomRight.y
+    }
+    
     override fun xyToOffset(editor: Editor, pos: Point): Int {
       return editor.logicalPositionToOffset(editor.xyToLogicalPosition(pos))
     }

src/main/kotlin/org/acejump/boundaries/StandardBoundaries.kt

@@ -13,23 +13,7 @@ enum class StandardBoundaries : Boundaries {
     }
     
     override fun isOffsetInside(editor: Editor, offset: Int, cache: EditorOffsetCache): Boolean {
-      
-      // If we are not using a cache, calling getOffsetRange will cause additional 1-2 pixel coordinate -> offset lookups, which is a lot
-      // more expensive than one lookup compared against the visible area.
-      
-      // However, if we are using a cache, it's likely that the topmost and bottommost positions are already cached whereas the provided
-      // offset isn't, so we save a lookup for every offset outside the range.
-      
-      if (cache !== EditorOffsetCache.Uncached && offset !in getOffsetRange(editor, cache)) {
-        return false
-      }
-      
-      val (topLeft, bottomRight) = cache.visibleArea(editor)
-      val pos = cache.offsetToXY(editor, offset)
-      val x = pos.x
-      val y = pos.y
-      
-      return x >= topLeft.x && y >= topLeft.y && x <= bottomRight.x && y <= bottomRight.y
+      return cache.isVisible(editor, offset)
     }
   },
   

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

@@ -13,7 +13,6 @@ 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 ||
@@ -24,7 +23,6 @@ class AceConfigurable : Configurable {
   
   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

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

@@ -8,7 +8,6 @@ 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,
   

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

@@ -11,6 +11,7 @@ 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.Dimension
 import java.awt.Font
 import java.util.Hashtable
 import javax.swing.JCheckBox
@@ -26,7 +27,6 @@ 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()
@@ -37,6 +37,7 @@ internal class AceSettingsPanel {
     paintTicks = true
     minorTickSpacing = 1
     majorTickSpacing = 1
+    minimumSize = Dimension(275, minimumSize.height)
   }
   private val jumpModeColorWheel = ColorPanel()
   private val tagForeground1ColorWheel = ColorPanel()
@@ -45,7 +46,6 @@ internal class AceSettingsPanel {
   
   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") }
   }
@@ -53,7 +53,6 @@ internal class AceSettingsPanel {
   internal val rootPanel: JPanel = panel {
     group("Characters and Layout") {
       row("Allowed characters in tags:") { cell(tagAllowedCharsField).columns(COLUMNS_LARGE) }
-      row("Allowed prefix characters in tags:") { cell(tagPrefixCharsField).columns(COLUMNS_MEDIUM) }
       row("Keyboard layout:") { cell(keyboardLayoutCombo).columns(COLUMNS_SHORT) }
       row("Keyboard design:") { cell(keyboardLayoutArea).columns(COLUMNS_SHORT) }
     }
@@ -81,7 +80,6 @@ internal class AceSettingsPanel {
   
   // 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
@@ -101,7 +99,6 @@ internal class AceSettingsPanel {
   
   fun reset(settings: AceSettings) {
     allowedChars = settings.allowedChars
-    prefixChars = settings.prefixChars
     keyboardLayout = settings.layout
     minQueryLength = settings.minQueryLength.toString()
     editorFadeOpacityPercent = settings.editorFadeOpacity

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

@@ -10,7 +10,6 @@ import com.intellij.openapi.editor.actionSystem.TypedActionHandler
  * sessions' own handlers.
  */
 internal object EditorKeyListener : TypedActionHandler {
-  private val action = TypedAction.getInstance()
   private val attached = mutableMapOf<Editor, TypedActionHandler>()
   private var originalHandler: TypedActionHandler? = null
   
@@ -20,8 +19,9 @@ internal object EditorKeyListener : TypedActionHandler {
   
   fun attach(editor: Editor, callback: TypedActionHandler) {
     if (attached.isEmpty()) {
-      originalHandler = action.rawHandler
-      action.setupRawHandler(this)
+      val typedAction = TypedAction.getInstance()
+      originalHandler = typedAction.rawHandler
+      typedAction.setupRawHandler(this)
     }
     
     attached[editor] = callback
@@ -31,7 +31,7 @@ internal object EditorKeyListener : TypedActionHandler {
     attached.remove(editor)
     
     if (attached.isEmpty()) {
-      originalHandler?.let(action::setupRawHandler)
+      originalHandler?.let(TypedAction.getInstance()::setupRawHandler)
       originalHandler = null
     }
   }

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

@@ -5,13 +5,18 @@ package org.acejump.input
  * ergonomically difficult they are to press.
  */
 @Suppress("unused", "SpellCheckingInspection")
-enum class KeyLayout(internal val rows: Array<String>, priority: String, internal val characterRemapping: Map<Char, Char> = emptyMap()) {
+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", characterRemapping =  mapOf(
+  QWERTY(arrayOf("1234567890", "qwertyuiop", "asdfghjkl", "zxcvbnm"), priority = "fjghdkslavncmbxzrutyeiwoqp5849673210", characterSides = sides(listOf("123456", "qwert", "asdfg", "zxcvb"), listOf("7890", "yuiop", "hjkl", "nm"))),
+  QWERTZ(arrayOf("1234567890", "qwertzuiop", "asdfghjkl", "yxcvbnm"), priority = "fjghdkslavncmbxyrutzeiwoqp5849673210", characterSides = sides(listOf("123456", "qwert", "asdfg", "yxcvb"), listOf("7890", "zuiop", "hjkl", "nm"))),
+  QWERTZ_CZ(arrayOf("1234567890", "qwertzuiop", "asdfghjkl", "yxcvbnm"), priority = "fjghdkslavncmbxyrutzeiwoqp5849673210", characterSides = sides(listOf("123456", "qwert", "asdfg", "yxcvb"), listOf("7890", "zuiop", "hjkl", "nm")), characterRemapping = mapOf(
     '+' to '1',
     'ě' to '2',
     'š' to '3',
@@ -28,9 +33,20 @@ enum class KeyLayout(internal val rows: Array<String>, priority: String, interna
   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.getOrDefault(tagToChar(it), Int.MAX_VALUE) }
+  fun priority(char: Char): Int {
+    return allPriorities[char] ?: allChars.length
+  }
+  
+  fun areOnSameSide(c1: Char, c2: Char): Boolean {
+    return (c1 in characterSides.first && c2 in characterSides.first) || (c1 in characterSides.second && c2 in characterSides.second)
   }
 }
+
+private fun sides(left: List<String>, right: List<String>): Pair<Set<Char>, Set<Char>> {
+  return Pair(
+    left.flatMapTo(mutableSetOf()) { it.toCharArray().toSet() },
+    right.flatMapTo(mutableSetOf()) { it.toCharArray().toSet() }
+  )
+}

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

@@ -1,23 +1,22 @@
 package org.acejump.input
 
 import org.acejump.config.AceSettings
+import kotlin.math.pow
+import kotlin.math.roundToInt
 
 /**
  * Stores data specific to the selected keyboard layout. We want to assign tags with easily reachable keys first, and ideally have tags
  * with repeated keys (ex. FF, JJ) or adjacent keys (ex. GH, UJ).
  */
 internal object KeyLayoutCache {
-  /**
-   * Returns all possible two key tags, pre-sorted according to [tagOrder].
-   */
-  lateinit var allPossibleTagsLowercase: List<String>
+  lateinit var allowedTagsSorted: List<String>
     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 (!::allPossibleTagsLowercase.isInitialized) {
+    if (!::allowedTagsSorted.isInitialized) {
       reset(settings)
     }
   }
@@ -26,22 +25,38 @@ internal object KeyLayoutCache {
    * Re-initializes cached data according to updated settings.
    */
   fun reset(settings: AceSettings) {
-    @Suppress("ConvertLambdaToReference")
-    val allSuffixChars = processCharList(settings.allowedChars).ifEmpty { processCharList(settings.layout.allChars).toList() }
-    val allPrefixChars = processCharList(settings.prefixChars).filterNot(allSuffixChars::contains).plus("")
+    val allowedChars = processCharList(settings.allowedChars).ifEmpty { processCharList(settings.layout.allChars) }
+    val allowedTags = mutableSetOf<String>()
     
-    val tagOrder = compareBy(
-      String::length,
-      { if (it.length == 1) Int.MIN_VALUE else allPrefixChars.indexOf(it.first().toString()) },
-      settings.layout.priority(String::last)
-    )
+    for (c1 in allowedChars) {
+      allowedTags.add("$c1")
+      
+      for (c2 in allowedChars) {
+        if (c1 != c2) {
+          allowedTags.add("$c1$c2")
+        }
+      }
+    }
     
-    allPossibleTagsLowercase = allSuffixChars
-      .flatMap { suffix -> allPrefixChars.map { prefix -> "$prefix$suffix" } }
-      .sortedWith(tagOrder)
+    allowedTagsSorted = allowedTags.sortedBy { rankPriority(settings.layout, it) }
   }
   
-  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()
+  }
+  
+  private fun rankPriority(layout: KeyLayout, tag: String): Int {
+    val c1 = tag.first()
+    val p1 = (1.0 + layout.priority(c1)).pow(3)
+    
+    if (tag.length == 1) {
+      return p1.roundToInt()
+    }
+    
+    val c2 = tag.last()
+    val p2 = (1.0 + layout.priority(c2)).pow(3)
+    
+    val multiplier = if (layout.areOnSameSide(c1, c2)) 2 else 1
+    return (((p1 * 50) + p2 + 1000) * multiplier).roundToInt()
   }
 }

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

@@ -3,6 +3,7 @@ package org.acejump.search
 import com.intellij.openapi.editor.Editor
 import it.unimi.dsi.fastutil.ints.IntArrayList
 import org.acejump.boundaries.Boundaries
+import org.acejump.boundaries.EditorOffsetCache
 import org.acejump.clone
 import org.acejump.config.AceConfig
 import org.acejump.immutableText
@@ -17,9 +18,10 @@ class SearchProcessor private constructor(query: SearchQuery, val boundaries: Bo
     
     if (regex != null) {
       for (editor in editors) {
+        val cache = EditorOffsetCache.new()
         val offsets = IntArrayList()
         
-        val offsetRange = boundaries.getOffsetRange(editor)
+        val offsetRange = boundaries.getOffsetRange(editor, cache)
         var result = regex.find(editor.immutableText, offsetRange.first)
         
         while (result != null) {
@@ -29,7 +31,7 @@ class SearchProcessor private constructor(query: SearchQuery, val boundaries: Bo
           if (highlightEnd > offsetRange.last) {
             break
           }
-          else if (boundaries.isOffsetInside(editor, index) && !editor.foldingModel.isOffsetCollapsed(index)) {
+          else if (boundaries.isOffsetInside(editor, index, cache) && !editor.foldingModel.isOffsetCollapsed(index)) {
             offsets.add(index)
           }
           

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

@@ -3,6 +3,7 @@ package org.acejump.search
 import com.google.common.collect.ArrayListMultimap
 import com.intellij.openapi.editor.Editor
 import it.unimi.dsi.fastutil.ints.IntList
+import it.unimi.dsi.fastutil.objects.Object2IntOpenHashMap
 import org.acejump.boundaries.EditorOffsetCache
 import org.acejump.boundaries.StandardBoundaries.VISIBLE_ON_SCREEN
 import org.acejump.input.KeyLayoutCache
@@ -40,7 +41,7 @@ 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.size).zip(tagSites).toMap()
   }
   
   internal fun type(char: Char): TaggingResult {
@@ -61,6 +62,68 @@ class Tagger(private val editors: List<Editor>, results: Map<Editor, IntList>) {
   }
   
   private companion object {
+    private fun generateTags(tagCount: Int): List<String> {
+      val allowedTagsSorted = KeyLayoutCache.allowedTagsSorted
+      val tags = mutableListOf<String>()
+      
+      val containedSingleCharTags = mutableSetOf<Char>()
+      val blockedSingleCharTags = mutableSetOf<Char>()
+      val doubleCharTagCountsByFirstChar = Object2IntOpenHashMap<Char>()
+      
+      for (tag in allowedTagsSorted) {
+        val firstChar = tag.first()
+        
+        if (tag.length == 1) {
+          if (firstChar in blockedSingleCharTags) {
+            continue
+          }
+          
+          containedSingleCharTags.add(firstChar)
+        }
+        else {
+          if (containedSingleCharTags.remove(firstChar)) {
+            tags.remove(firstChar.toString())
+          }
+          
+          blockedSingleCharTags.add(firstChar)
+          doubleCharTagCountsByFirstChar.addTo(firstChar, 1)
+        }
+        
+        tags.add(tag)
+        
+        if (tags.size >= tagCount) {
+          break
+        }
+      }
+      
+      // In rare cases, the final tag list may contain a double character tag that is the only tag starting with its first character,
+      // so we replace it with the single character tag.
+      for (entry in doubleCharTagCountsByFirstChar.object2IntEntrySet()) {
+        if (entry.intValue != 1) {
+          continue
+        }
+        
+        tags.removeAt(tags.indexOfFirst { it.first() == entry.key })
+        
+        val tag = entry.key.toString()
+        var previousTagIndex = -1
+        
+        // The implementation of searching where to place the single character tag is theoretically slow,
+        // but getting here is so rare it doesn't matter.
+        for (i in allowedTagsSorted.indexOf(tag) - 1 downTo 0) {
+          previousTagIndex = tags.indexOf(allowedTagsSorted[i])
+          
+          if (previousTagIndex != -1) {
+            break
+          }
+        }
+        
+        tags.add(previousTagIndex + 1, tag)
+      }
+      
+      return tags
+    }
+    
     private fun sortResults(results: Map<Editor, IntList>, caches: Map<Editor, EditorOffsetCache>) {
       for ((editor, offsets) in results) {
         val cache = caches.getValue(editor)
@@ -99,12 +162,11 @@ class Tagger(private val editors: List<Editor>, results: Map<Editor, IntList>) {
         return@Comparator if (aIsVisible) -1 else 1
       }
       
-      val aPosition = aCaches.offsetToXY(aEditor, a.offset)
-      val bPosition = bCaches.offsetToXY(bEditor, b.offset)
+      val firstEditor = editorPriority[0]
+      val caretPosition = caches.getValue(firstEditor).offsetToXY(firstEditor, firstEditor.caretModel.offset)
       
-      val caretPosition = editorPriority[0].offsetToXY(editorPriority[0].caretModel.offset)
-      val aDistance = aPosition.distanceSq(caretPosition)
-      val bDistance = bPosition.distanceSq(caretPosition)
+      val aDistance = aCaches.offsetToXY(aEditor, a.offset).distanceSq(caretPosition)
+      val bDistance = bCaches.offsetToXY(bEditor, b.offset).distanceSq(caretPosition)
       
       return@Comparator aDistance.compareTo(bDistance)
     }

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

@@ -12,10 +12,13 @@ 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: CharArray,
+  private val firstChar: String,
+  private val secondChar: String,
   val offset: Int
 ) {
-  private val length = tag.size
+  private constructor(tag: String, offset: Int) : this(tag.first().toString(), tag.drop(1), offset)
+  
+  private val length = firstChar.length + secondChar.length
   
   companion object {
     /**
@@ -28,7 +31,7 @@ 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).toCharArray(), offset)
+      return TagMarker(tag.drop(typedTag.length), offset)
     }
   }
   
@@ -65,11 +68,11 @@ internal class TagMarker(
     
     g.font = font.tagFont
     g.color = font.foregroundColor1
-    g.drawChars(tag, 0, 1, x, y)
+    g.drawString(firstChar, x, y)
     
-    if (tag.size > 1) {
+    if (secondChar.isNotEmpty()) {
       g.color = font.foregroundColor2
-      g.drawChars(tag, 1, length - 1, x + font.tagCharWidth, y)
+      g.drawString(secondChar, x + font.tagCharWidth, y)
     }
   }