Better handling of the Gradle plugin description extraction from the README file

CHANGELOG.md

@@ -3,6 +3,9 @@
 # IntelliJ Platform Plugin Template Changelog
 
 ## [Unreleased]
+### Added
+- Better handling of the Gradle plugin description extraction from the README file
+
 ### Changed
 - Gradle - remove kotlin("stdlib-jdk8") dependency to decrease the plugin artifact size
 

build.gradle.kts

@@ -93,7 +93,13 @@ tasks {
         // Extract the <!-- Plugin description --> section from README.md and provide for the plugin's manifest
         pluginDescription(closure {
             File("./README.md").readText().lines().run {
-                subList(indexOf("<!-- Plugin description -->") + 1, indexOf("<!-- Plugin description end -->"))
+                val start = "<!-- Plugin description -->"
+                val end = "<!-- Plugin description end -->"
+
+                if (!containsAll(listOf(start, end))) {
+                    throw GradleException("Plugin description section not found in README.md file:\n$start ... $end")
+                }
+                subList(indexOf(start) + 1, indexOf(end))
             }.joinToString("\n").run { markdownToHTML(this) }
         })