nimpretty: fixes #9500

(cherry picked from commit 87d60b2a4b)

compiler/lexer.nim

@@ -1096,6 +1096,7 @@ proc skip(L: var TLexer, tok: var TToken) =
             hasComment = true
             if tok.line < 0:
               tok.line = L.lineNumber
+              commentIndent = indent
           skipMultiLineComment(L, tok, pos+2, false)
           pos = L.bufpos
           buf = L.buf

nimpretty/tests/exhaustive.nim

@@ -334,3 +334,26 @@ proc abcdef*[T:not (tuple|object|string|cstring|char|ref|ptr|array|seq|distinct)
   # bug #9504
   type T2 = a.type
   discard
+
+proc fun() =
+  #[
+  this one here
+  ]#
+  discard
+
+proc fun2() =
+  ##[
+  foobar
+  ]##
+  discard
+
+#[
+foobar
+]#
+
+proc fun3() =
+  discard
+
+##[
+foobar
+]##

nimpretty/tests/expected/exhaustive.nim

@@ -343,3 +343,26 @@ proc abcdef*[T: not (tuple|object|string|cstring|char|ref|ptr|array|seq|distinct
   # bug #9504
   type T2 = a.type
   discard
+
+proc fun() =
+  #[
+  this one here
+  ]#
+  discard
+
+proc fun2() =
+  ##[
+  foobar
+  ]##
+  discard
+
+#[
+foobar
+]#
+
+proc fun3() =
+  discard
+
+##[
+foobar
+]##