Add truncate warning to body of comment (peter-evans#272)

* Add truncate warning to body of comment (peter-evans#271)

* add truncate warning to body of comment

* tweak warning

Co-authored-by: Peter Evans <18365890+peter-evans@users.noreply.github.com>

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Co-authored-by: Peter Evans <18365890+peter-evans@users.noreply.github.com>

* lint fixes

* update dist

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Co-authored-by: Ethan Davidson <ethanmdavidson@gmail.com>

Author: peter-evans

dist/index.js

@@ -130,9 +130,10 @@ function appendSeparatorTo(body, separator) {
 }
 function truncateBody(body) {
     // 65536 characters is the maximum allowed for issue comments.
+    const truncateWarning = '...*[Comment body truncated]*';
     if (body.length > 65536) {
         core.warning(`Comment body is too long. Truncating to 65536 characters.`);
-        return body.substring(0, 65536);
+        return body.substring(0, 65536 - truncateWarning.length) + truncateWarning;
     }
     return body;
 }

src/create-or-update-comment.ts

@@ -120,9 +120,10 @@ function appendSeparatorTo(body: string, separator: string): string {
 
 function truncateBody(body: string) {
   // 65536 characters is the maximum allowed for issue comments.
+  const truncateWarning = '...*[Comment body truncated]*'
   if (body.length > 65536) {
     core.warning(`Comment body is too long. Truncating to 65536 characters.`)
-    return body.substring(0, 65536)
+    return body.substring(0, 65536 - truncateWarning.length) + truncateWarning
   }
   return body
 }