fix(parser): keep the full headword in the display text

The display form was truncated at the first formatting tag, so headwords
with a mid-word stress mark displayed as their prefix only. Build the
display from the full text with tags stripped and render stress marks as
a combining acute accent. Bump the index version so existing indexes
rebuild.

app/src/main/java/com/example/research/core/util/StringExtensions.kt

@@ -60,7 +60,10 @@ fun String.extractDictionaryPrefix(): String {
 }
 
 
-fun String.removeAccentTagsForIndexing(): String {
+fun String.removeAccentTagsForIndexing(): String =
+    rewriteAccentTags { builder, from, to -> builder.append(this, from, to) }
+
+internal inline fun String.rewriteAccentTags(appendInner: (StringBuilder, Int, Int) -> Unit): String {
     val firstOpen = indexOf("[']")
     if (firstOpen < 0) return this
 
@@ -80,7 +83,7 @@ fun String.removeAccentTagsForIndexing(): String {
                     builder = StringBuilder(length)
                 }
                 builder.append(this, appendStart, index)
-                builder.append(this, index + 3, scan)
+                appendInner(builder, index + 3, scan)
                 index = scan + 4
                 appendStart = index
                 continue
@@ -94,7 +97,7 @@ fun String.removeAccentTagsForIndexing(): String {
     }?.toString() ?: this
 }
 
-private fun String.startsWithAt(start: Int, literal: String): Boolean {
+internal fun String.startsWithAt(start: Int, literal: String): Boolean {
     if (start < 0 || start + literal.length > length) return false
     for (i in literal.indices) {
         if (this[start + i] != literal[i]) return false

app/src/main/java/com/example/research/data/parser/DslHeadwordParser.kt

@@ -1,5 +1,8 @@
 package com.example.research.data.parser
 
+import com.example.research.core.util.rewriteAccentTags
+import com.example.research.core.util.startsWithAt
+
 object DslHeadwordParser {
 
     private val FORMATTING_LITERAL_TAGS = arrayOf(
@@ -117,12 +120,12 @@ object DslHeadwordParser {
     }
 
     private fun reconstructDisplayPrefix(value: String): String {
-        val reconstructed = removeCurlyBraceDelimiters(value)
-        val formattingTagIndex = firstFormattingTagIndex(reconstructed)
-        return if (formattingTagIndex >= 0) {
-            reconstructed.substring(0, formattingTagIndex).trim()
-        } else {
-            reconstructed.trim()
+        return removeFormattingTags(removeCurlyBraceDelimiters(value).applyAccentMarks()).trim()
+    }
+
+    private fun String.applyAccentMarks(): String = rewriteAccentTags { builder, from, to ->
+        if (to > from) {
+            builder.append(this[from]).append('\u0301').append(this, from + 1, to)
         }
     }
 
@@ -145,21 +148,6 @@ object DslHeadwordParser {
         }
     }
 
-    private fun firstFormattingTagIndex(value: String): Int {
-        var index = 0
-        while (index < value.length) {
-            if (value[index] == '\\' && index + 1 < value.length) {
-                index += 2
-                continue
-            }
-            if (value[index] == '[' && formattingTagEnd(value, index) > index) {
-                return index
-            }
-            index++
-        }
-        return -1
-    }
-
     private fun firstCurlyContent(value: String): String? {
         var index = 0
         while (index < value.length) {
@@ -346,14 +334,6 @@ object DslHeadwordParser {
         return if (index < value.length && value[index] == ']') index + 1 else -1
     }
 
-    private fun String.startsWithAt(start: Int, literal: String): Boolean {
-        if (start < 0 || start + literal.length > length) return false
-        for (i in literal.indices) {
-            if (this[start + i] != literal[i]) return false
-        }
-        return true
-    }
-
     private fun Char.isTagWhitespace(): Boolean {
         return this == ' ' ||
             this == '\t' ||

app/src/main/java/com/example/research/data/parser/DslIndexer.kt

@@ -24,7 +24,7 @@ class DslIndexer(context: Context? = null) {
 
     companion object {
         private const val TAG = "DslIndexer"
-        const val INDEX_VERSION = 6
+        const val INDEX_VERSION = 7
         const val BUFFER_SIZE = 1048576
         const val BATCH_BUFFER_SIZE = 524288
         private const val INDEX_SORT_PARALLELISM = 1