diff --git a/.idea/libraries/jetbrains_markdown.xml b/.idea/libraries/jetbrains_markdown.xml
index 41e3dca001b4..55fab5e637b4 100644
--- a/.idea/libraries/jetbrains_markdown.xml
+++ b/.idea/libraries/jetbrains_markdown.xml
@@ -1,9 +1,9 @@
 <component name="libraryTable">
   <library name="jetbrains.markdown" type="repository">
-    <properties maven-id="org.jetbrains:markdown-jvm:0.7.5">
+    <properties maven-id="org.jetbrains:markdown-jvm:0.7.7">
       <verification>
-        <artifact url="file://$MAVEN_REPOSITORY$/org/jetbrains/markdown-jvm/0.7.5/markdown-jvm-0.7.5.jar">
-          <sha256sum>d4f3df73b2bab29a02f09114fe270ad63d0581da524a0db37df827c8d8f27f1c</sha256sum>
+        <artifact url="file://$MAVEN_REPOSITORY$/org/jetbrains/markdown-jvm/0.7.7/markdown-jvm-0.7.7.jar">
+          <sha256sum>df0b88266501c622ffcd0cc174b29aed9e19e73cb93e0d51b4ebca4cee01a82f</sha256sum>
         </artifact>
       </verification>
       <exclude>
@@ -12,11 +12,11 @@
       </exclude>
     </properties>
     <CLASSES>
-      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/markdown-jvm/0.7.5/markdown-jvm-0.7.5.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/markdown-jvm/0.7.7/markdown-jvm-0.7.7.jar!/" />
     </CLASSES>
     <JAVADOC />
     <SOURCES>
-      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/markdown-jvm/0.7.5/markdown-jvm-0.7.5-sources.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/markdown-jvm/0.7.7/markdown-jvm-0.7.7-sources.jar!/" />
     </SOURCES>
   </library>
 </component>
\ No newline at end of file
diff --git a/lib/BUILD.bazel b/lib/BUILD.bazel
index b937a6e57081..dc5eb596b1b1 100644
--- a/lib/BUILD.bazel
+++ b/lib/BUILD.bazel
@@ -7184,17 +7184,17 @@ jvm_import(
 )
 
 copy_file(
-    name = "org.jetbrains/markdown-jvm-0.7.5.jar_copy",
-    src = "@org_jetbrains-markdown-jvm-0_7_5_http//file",
-    out = "org.jetbrains/markdown-jvm-0.7.5.jar",
+    name = "org.jetbrains/markdown-jvm-0.7.7.jar_copy",
+    src = "@org_jetbrains-markdown-jvm-0_7_7_http//file",
+    out = "org.jetbrains/markdown-jvm-0.7.7.jar",
     allow_symlink = True,
     visibility = ["//visibility:public"],
 )
 
 jvm_import(
     name = "jetbrains-markdown",
-    jar = "@org_jetbrains-markdown-jvm-0_7_5_http//file",
-    source_jar = "@org_jetbrains-markdown-jvm-0_7_5-sources_http//file",
+    jar = "@org_jetbrains-markdown-jvm-0_7_7_http//file",
+    source_jar = "@org_jetbrains-markdown-jvm-0_7_7-sources_http//file",
     visibility = ["//visibility:public"],
 )
 
diff --git a/lib/MODULE.bazel b/lib/MODULE.bazel
index 4765fa6b68cc..9b15ef886c43 100644
--- a/lib/MODULE.bazel
+++ b/lib/MODULE.bazel
@@ -5699,17 +5699,17 @@ http_file(
 )
 
 http_file(
-    name = "org_jetbrains-markdown-jvm-0_7_5_http",
-    downloaded_file_path = "markdown-jvm-0.7.5.jar",
-    sha256 = "d4f3df73b2bab29a02f09114fe270ad63d0581da524a0db37df827c8d8f27f1c",
-    url = "https://cache-redirector.jetbrains.com/repo1.maven.org/maven2/org/jetbrains/markdown-jvm/0.7.5/markdown-jvm-0.7.5.jar",
+    name = "org_jetbrains-markdown-jvm-0_7_7_http",
+    downloaded_file_path = "markdown-jvm-0.7.7.jar",
+    sha256 = "df0b88266501c622ffcd0cc174b29aed9e19e73cb93e0d51b4ebca4cee01a82f",
+    url = "https://cache-redirector.jetbrains.com/repo1.maven.org/maven2/org/jetbrains/markdown-jvm/0.7.7/markdown-jvm-0.7.7.jar",
 )
 
 http_file(
-    name = "org_jetbrains-markdown-jvm-0_7_5-sources_http",
-    downloaded_file_path = "markdown-jvm-0.7.5-sources.jar",
-    sha256 = "bc6c9ea9f4a8c75578ebb7488e29254e16f6f405ef44ea6b3c6d334f5b44ef04",
-    url = "https://cache-redirector.jetbrains.com/repo1.maven.org/maven2/org/jetbrains/markdown-jvm/0.7.5/markdown-jvm-0.7.5-sources.jar",
+    name = "org_jetbrains-markdown-jvm-0_7_7-sources_http",
+    downloaded_file_path = "markdown-jvm-0.7.7-sources.jar",
+    sha256 = "e6a3f6346e183af31797952b095b7337f3973aff075cc4e8352ecdb90f372869",
+    url = "https://cache-redirector.jetbrains.com/repo1.maven.org/maven2/org/jetbrains/markdown-jvm/0.7.7/markdown-jvm-0.7.7-sources.jar",
 )
 
 http_file(
diff --git a/plugins/markdown/core/src/org/intellij/plugins/markdown/lang/parser/MarkdownParserManager.kt b/plugins/markdown/core/src/org/intellij/plugins/markdown/lang/parser/MarkdownParserManager.kt
index 578c3d175aa5..3503c95d9b33 100644
--- a/plugins/markdown/core/src/org/intellij/plugins/markdown/lang/parser/MarkdownParserManager.kt
+++ b/plugins/markdown/core/src/org/intellij/plugins/markdown/lang/parser/MarkdownParserManager.kt
@@ -7,7 +7,6 @@ import com.intellij.openapi.components.service
 import com.intellij.openapi.progress.ProgressManager
 import com.intellij.openapi.util.Key
 import com.intellij.openapi.util.text.StringUtil.BombedCharSequence
-import org.intellij.markdown.ExperimentalApi
 import org.intellij.markdown.MarkdownElementTypes
 import org.intellij.markdown.ast.ASTNode
 import org.intellij.markdown.flavours.MarkdownFlavourDescriptor
@@ -42,7 +41,7 @@ class MarkdownParserManager: Disposable {
     }
     val parseResult = createMarkdownParser(flavour).parse(
       MarkdownElementTypes.MARKDOWN_FILE,
-      buffer.toString(),
+      buffer,
       parseInlines = false
     )
     lastParsingResult.set(SoftReference(ParsingResult(buffer, parseResult)))
@@ -67,7 +66,6 @@ class MarkdownParserManager: Disposable {
     }
 
     @JvmStatic
-    @OptIn(ExperimentalApi::class)
     fun createMarkdownParser(flavour: MarkdownFlavourDescriptor, assertionsEnabled: Boolean = true): MarkdownParser =
       MarkdownParser(flavour, assertionsEnabled) { ProgressManager.checkCanceled() }
 
diff --git a/plugins/markdown/core/src/org/intellij/plugins/markdown/lang/parser/blocks/DefinitionListMarkerProvider.kt b/plugins/markdown/core/src/org/intellij/plugins/markdown/lang/parser/blocks/DefinitionListMarkerProvider.kt
index 3e900ad93f72..afbb8709c60e 100644
--- a/plugins/markdown/core/src/org/intellij/plugins/markdown/lang/parser/blocks/DefinitionListMarkerProvider.kt
+++ b/plugins/markdown/core/src/org/intellij/plugins/markdown/lang/parser/blocks/DefinitionListMarkerProvider.kt
@@ -42,7 +42,7 @@ class DefinitionListMarkerProvider: MarkerBlockProvider<MarkerProcessor.StateInf
     @JvmField
     val DEFINITION_MARKER: IElementType = MarkdownElementType("DEFINITION_MARKER", isToken = true)
 
-    fun isDefinitionLine(line: String): Boolean {
+    fun isDefinitionLine(line: CharSequence): Boolean {
       return line.trimStart(' ', '\t').startsWith(": ")
     }
   }
diff --git a/plugins/markdown/core/src/org/intellij/plugins/markdown/lang/parser/blocks/frontmatter/FrontMatterHeaderBlock.kt b/plugins/markdown/core/src/org/intellij/plugins/markdown/lang/parser/blocks/frontmatter/FrontMatterHeaderBlock.kt
index c7c5b2e72c04..ee90fb653770 100644
--- a/plugins/markdown/core/src/org/intellij/plugins/markdown/lang/parser/blocks/frontmatter/FrontMatterHeaderBlock.kt
+++ b/plugins/markdown/core/src/org/intellij/plugins/markdown/lang/parser/blocks/frontmatter/FrontMatterHeaderBlock.kt
@@ -14,7 +14,7 @@ internal class FrontMatterHeaderBlock(
   private val startPosition: LookaheadText.Position,
   constraints: MarkdownConstraints,
   private val productionHolder: ProductionHolder,
-  private val openingDelimiterText: String
+  private val openingDelimiterText: CharSequence
 ): MarkerBlockImpl(constraints, productionHolder.mark()) {
   private var lastContentPosition: LookaheadText.Position? = null
   private lateinit var closingDelimiterPosition: LookaheadText.Position
@@ -56,7 +56,7 @@ internal class FrontMatterHeaderBlock(
     return MarkerBlock.ProcessingResult.CANCEL
   }
 
-  private fun isClosingDelimiter(line: String): Boolean {
+  private fun isClosingDelimiter(line: CharSequence): Boolean {
     return isYamlDelimiters(openingDelimiterText, line) || isTomlDelimiters(openingDelimiterText, line)
   }
 
diff --git a/plugins/markdown/core/src/org/intellij/plugins/markdown/lang/parser/blocks/frontmatter/FrontMatterHeaderMarkerProvider.kt b/plugins/markdown/core/src/org/intellij/plugins/markdown/lang/parser/blocks/frontmatter/FrontMatterHeaderMarkerProvider.kt
index 40ab6459c506..aacd017ba0b8 100644
--- a/plugins/markdown/core/src/org/intellij/plugins/markdown/lang/parser/blocks/frontmatter/FrontMatterHeaderMarkerProvider.kt
+++ b/plugins/markdown/core/src/org/intellij/plugins/markdown/lang/parser/blocks/frontmatter/FrontMatterHeaderMarkerProvider.kt
@@ -58,7 +58,7 @@ class FrontMatterHeaderMarkerProvider: MarkerBlockProvider<MarkerProcessor.State
     return listOf(FrontMatterHeaderBlock(position, stateInfo.currentConstraints, productionHolder, possibleDelimiter))
   }
 
-  private fun hasClosingDelimiter(startPosition: LookaheadText.Position, openingDelimiter: String): Boolean {
+  private fun hasClosingDelimiter(startPosition: LookaheadText.Position, openingDelimiter: CharSequence): Boolean {
     var current = startPosition.nextLinePosition() ?: return false
     while (true) {
       val line = current.currentLine
@@ -83,31 +83,31 @@ class FrontMatterHeaderMarkerProvider: MarkerBlockProvider<MarkerProcessor.State
     @JvmField
     val FRONT_MATTER_HEADER_CONTENT = MarkdownElementType("FRONT_MATTER_HEADER_CONTENT", isToken = true)
 
-    internal fun isOpeningDelimiterLine(line: String): Boolean {
+    internal fun isOpeningDelimiterLine(line: CharSequence): Boolean {
       return isYamlDashedDelimiterLine(line) || isTomlDelimiterLine(line)
     }
 
-    private fun isYamlDashedDelimiterLine(line: String): Boolean {
+    private fun isYamlDashedDelimiterLine(line: CharSequence): Boolean {
       return line.length >= 3 && line.all { it == '-' }
     }
 
-    internal fun canBePairedWithClosingDots(opening: String): Boolean {
+    internal fun canBePairedWithClosingDots(opening: CharSequence): Boolean {
       return isYamlDashedDelimiterLine(opening)
     }
 
-    private fun isYamlDottedDelimiterLine(line: String): Boolean {
+    private fun isYamlDottedDelimiterLine(line: CharSequence): Boolean {
       return line.length >= 3 && line.all { it == '.' }
     }
 
-    internal fun isYamlDelimiters(opening: String, closing: String): Boolean {
+    internal fun isYamlDelimiters(opening: CharSequence, closing: CharSequence): Boolean {
       return isYamlDashedDelimiterLine(opening) && (isYamlDashedDelimiterLine(closing) || isYamlDottedDelimiterLine(closing))
     }
 
-    private fun isTomlDelimiterLine(line: String): Boolean {
+    private fun isTomlDelimiterLine(line: CharSequence): Boolean {
       return line.length >= 3 && line.all { it == '+' }
     }
 
-    internal fun isTomlDelimiters(opening: String, closing: String): Boolean {
+    internal fun isTomlDelimiters(opening: CharSequence, closing: CharSequence): Boolean {
       return isTomlDelimiterLine(opening) && isTomlDelimiterLine(closing)
     }
   }
diff --git a/plugins/markdown/core/src/org/intellij/plugins/markdown/ui/preview/html/FootnoteGeneratingProvider.kt b/plugins/markdown/core/src/org/intellij/plugins/markdown/ui/preview/html/FootnoteGeneratingProvider.kt
index 5a211855267d..158df35429bf 100644
--- a/plugins/markdown/core/src/org/intellij/plugins/markdown/ui/preview/html/FootnoteGeneratingProvider.kt
+++ b/plugins/markdown/core/src/org/intellij/plugins/markdown/ui/preview/html/FootnoteGeneratingProvider.kt
@@ -2,6 +2,7 @@
 package org.intellij.plugins.markdown.ui.preview.html
 
 import com.intellij.openapi.progress.ProgressManager
+import com.intellij.openapi.util.text.StringUtil.BombedCharSequence
 import org.intellij.markdown.MarkdownElementTypes
 import org.intellij.markdown.MarkdownTokenTypes
 import org.intellij.markdown.ast.ASTNode
@@ -62,7 +63,12 @@ internal class FootnoteMap private constructor(
 
     private fun renderBodyMarkdown(body: String, baseUri: URI?, fullMap: FootnoteMap? = null): String {
       val content = if (body.endsWith('\n')) body else "$body\n"
-      val parsedTree = MarkdownParserManager.createMarkdownParser(MarkdownParserManager.FLAVOUR).buildMarkdownTreeFromString(content)
+      val parsedTree = MarkdownParserManager.createMarkdownParser(MarkdownParserManager.FLAVOUR)
+        .buildMarkdownTreeFromString(object : BombedCharSequence(content) {
+          override fun checkCanceled() {
+            ProgressManager.checkCanceled()
+          }
+        })
       val linkMap = LinkMap.buildLinkMap(parsedTree, content)
       val providers = MarkdownParserManager.FLAVOUR.createHtmlGeneratingProviders(linkMap, baseUri).toMutableMap()
       if (fullMap != null) {
@@ -220,7 +226,12 @@ internal class FootnoteMap private constructor(
           processed.add(label)
           val body = definitions[label]!!
           val content = if (body.endsWith('\n')) body else "$body\n"
-          val bodyTree = MarkdownParserManager.createMarkdownParser(MarkdownParserManager.FLAVOUR).buildMarkdownTreeFromString(content)
+          val bodyTree = MarkdownParserManager.createMarkdownParser(MarkdownParserManager.FLAVOUR)
+            .buildMarkdownTreeFromString(object : BombedCharSequence(content) {
+              override fun checkCanceled() {
+                ProgressManager.checkCanceled()
+              }
+            })
           val nestedDefs = mutableMapOf<String, String>()
           val nestedRefs = mutableListOf<String>()
           collectFromAst(bodyTree, content, nestedDefs, mutableSetOf(), nestedRefs)
diff --git a/plugins/markdown/core/src/org/intellij/plugins/markdown/ui/preview/html/MarkdownUtil.kt b/plugins/markdown/core/src/org/intellij/plugins/markdown/ui/preview/html/MarkdownUtil.kt
index ae67b0e7b564..db62f2b3f82c 100644
--- a/plugins/markdown/core/src/org/intellij/plugins/markdown/ui/preview/html/MarkdownUtil.kt
+++ b/plugins/markdown/core/src/org/intellij/plugins/markdown/ui/preview/html/MarkdownUtil.kt
@@ -1,7 +1,9 @@
 // Copyright 2000-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
 package org.intellij.plugins.markdown.ui.preview.html
 
+import com.intellij.openapi.progress.ProgressManager
 import com.intellij.openapi.project.Project
+import com.intellij.openapi.util.text.StringUtil.BombedCharSequence
 import com.intellij.openapi.vfs.VirtualFile
 import com.intellij.util.io.DigestUtil
 import org.intellij.markdown.MarkdownElementTypes
@@ -33,7 +35,12 @@ object MarkdownUtil {
     val parent = file.parent
     val baseUri = if (parent != null) File(parent.path).toURI() else null
 
-    val parsedTree = MarkdownParserManager.createMarkdownParser(MarkdownParserManager.FLAVOUR).buildMarkdownTreeFromString(text)
+    val parsedTree = MarkdownParserManager.createMarkdownParser(MarkdownParserManager.FLAVOUR)
+      .buildMarkdownTreeFromString(object : BombedCharSequence(text) {
+        override fun checkCanceled() {
+          ProgressManager.checkCanceled()
+        }
+      })
     val cacheCollector = MarkdownCodeFencePluginCacheCollector(file)
 
     val linkMap = LinkMap.buildLinkMap(parsedTree, text)