single line comments (#411)

<!-- This is an auto-generated comment: release notes by OSS CodeRabbit
-->
### Summary by CodeRabbit

**Refactor:**
- Updated the annotation format in code hunks for better readability.
- Introduced a new regular expression to handle single line comments in
`src/review.ts`.
- Adjusted guidelines for providing comments in code reviews in
`src/prompts.ts`.

> 🎉 Here's to the code that we refine,  
> With each little tweak, it shines more divine.  
> Single line comments, now easier to find,  
> Making our reviews more streamlined and kind. 🥳

<!-- end of auto-generated comment: release notes by OSS CodeRabbit -->

Author: harjotgill

dist/index.js

@@ -105,8 +105,8 @@ The format for changes provided below consists of multiple change
 sections, each containing a new hunk (annotated with line numbers), 
 an old hunk, and optionally, existing comment chains. Note that the 
 old hunk code has been replaced by the new hunk. The line number 
-annotation on each line in the new hunk is of the 
-format \`<line_number><colon><whitespace>\`.
+annotation on some lines in the new hunk is of the format 
+\`<line_number><colon><whitespace>\`.
 
 ### Format for changes
 
@@ -143,7 +143,7 @@ format \`<line_number><colon><whitespace>\`.
   strong evidence within the provided context to suggest there might be a problem.
 - Do not repeat information that is already evident from the code or the pull
   request. Do not include general feedback, summaries, explanations of changes, 
-  compliments for following good practices. 
+  and/or compliments for following good practices. 
 - Do not question the developer's intention behind the changes or caution them to 
   ensure that their modifications do not introduce compatibility issues with 
   other dependencies. 

src/prompts.ts

@@ -874,6 +874,7 @@ function parseReview(
 
   const lines = response.split('\n')
   const lineNumberRangeRegex = /(?:^|\s)(\d+)-(\d+):\s*$/
+  const lineNumberSingleRegex = /(?:^|\s)(\d+):\s*$/ // New single line regex
   const commentSeparator = '---'
 
   let currentStartLine: number | null = null
@@ -976,6 +977,7 @@ ${review.comment}`
 
   for (const line of lines) {
     const lineNumberRangeMatch = line.match(lineNumberRangeRegex)
+    const lineNumberSingleMatch = line.match(lineNumberSingleRegex) // Check for single line match
 
     if (lineNumberRangeMatch != null) {
       storeReview()
@@ -986,6 +988,15 @@ ${review.comment}`
         info(`Found line number range: ${currentStartLine}-${currentEndLine}`)
       }
       continue
+    } else if (lineNumberSingleMatch != null) {
+      storeReview()
+      currentStartLine = parseInt(lineNumberSingleMatch[1], 10)
+      currentEndLine = currentStartLine // For single line comments, start and end are the same
+      currentComment = ''
+      if (debug) {
+        info(`Found single line comment: ${currentStartLine}`)
+      }
+      continue
     }
 
     if (line.trim() === commentSeparator) {