better stress in some russian words

composeApp/src/commonMain/kotlin/net/sergeych/toread/ReadAloudPlatform.kt

@@ -31,11 +31,17 @@ data class ReadAloudVoiceOption(
     val networkRequired: Boolean,
 )
 
+data class ReadAloudTextReplacement(
+    val from: String,
+    val to: String,
+)
+
 data class ReadAloudSettingsState(
     val engines: List<ReadAloudEngineOption> = emptyList(),
     val selectedEngineId: String? = null,
     val voices: List<ReadAloudVoiceOption> = emptyList(),
     val selectedVoiceId: String? = null,
+    val textReplacements: List<ReadAloudTextReplacement> = emptyList(),
     val loading: Boolean = false,
     val message: String? = null,
 )

composeApp/src/commonMain/kotlin/net/sergeych/toread/ReaderContent.kt

@@ -799,10 +799,37 @@ private fun String.isReadAloudPauseBreak(): Boolean {
 }
 
 private fun String.toReadAloudSpokenText(): String =
-    replace(Regex("\\.{2,}"), ".")
+    applyReadAloudTextReplacements(ReadAloudHardcodedTextReplacements)
+        .withReadAloudStressMarkers()
+        .replace(Regex("\\.{2,}"), ".")
+        .replace(Regex("([!?])\\.+"), "$1")
         .replace('…', '.')
         .trim()
 
+private fun String.applyReadAloudTextReplacements(replacements: List<ReadAloudTextReplacement>): String =
+    replacements.fold(this) { text, replacement ->
+        text.replace(replacement.from, replacement.to)
+    }
+
+private fun String.withReadAloudStressMarkers(): String = buildString(length) {
+    var index = 0
+    while (index < this@withReadAloudStressMarkers.length) {
+        val current = this@withReadAloudStressMarkers[index]
+        val next = this@withReadAloudStressMarkers.getOrNull(index + 1)
+        if ((current == '/' || current == '\'') && next != null && next.isReadAloudStressableLetter()) {
+            append(next)
+            append(CombiningAcuteAccent)
+            index += 2
+        } else {
+            append(current)
+            index += 1
+        }
+    }
+}
+
+private fun Char.isReadAloudStressableLetter(): Boolean =
+    this in ReadAloudStressableLetters
+
 private fun String.sentenceRanges(): List<ReaderSentenceRange> {
     val ranges = mutableListOf<ReaderSentenceRange>()
     var start = 0
@@ -838,9 +865,10 @@ private fun String.sentenceRanges(): List<ReaderSentenceRange> {
 }
 
 private fun String.sentenceTerminatorEnd(index: Int): Int {
-    if (this[index] != '.') return index + 1
     var end = index + 1
-    while (end < length && this[end] == '.') end += 1
+    if (this[index] == '.' || this[index] == '!' || this[index] == '?') {
+        while (end < length && this[end] == '.') end += 1
+    }
     return end
 }
 
@@ -854,6 +882,14 @@ private const val HeadingPauseBeforeMillis = 1_000L
 private const val HeadingPauseAfterMillis = 600L
 private const val StarBreakPauseMillis = 1_200L
 private const val EllipsisPauseAfterMillis = 350L
+private const val CombiningAcuteAccent = '\u0301'
+private const val ReadAloudStressableLetters = "аеёиоуыэюяАЕЁИОУЫЭЮЯaeiouyAEIOUY"
+
+private val ReadAloudHardcodedTextReplacements = listOf(
+    ReadAloudTextReplacement("Господа,", "Господ/а,"),
+    ReadAloudTextReplacement("господа", "господ/а"),
+    ReadAloudTextReplacement("прошуршала", "прошурш/ала"),
+)
 
 private fun List<Fb2Section>.flattenSections(depth: Int = 0): List<ChapterEntry> =
     flatMapIndexed { index, section ->