amend f67dd7f: fix the spurious warning about duplicated label reported in #2387

Author: yihui

DESCRIPTION

@@ -1,9 +1,9 @@
 Package: knitr
 Type: Package
 Title: A General-Purpose Package for Dynamic Report Generation in R
-Version: 1.49.3
+Version: 1.49.4
 Authors@R: c(
-    person("Yihui", "Xie", role = c("aut", "cre"), email = "xie@yihui.name", comment = c(ORCID = "0000-0003-0645-5666")),
+    person("Yihui", "Xie", role = c("aut", "cre"), email = "xie@yihui.name", comment = c(ORCID = "0000-0003-0645-5666", URL = "https://yihui.org")),
     person("Abhraneel", "Sarma", role = "ctb"),
     person("Adam", "Vogt", role = "ctb"),
     person("Alastair", "Andrew", role = "ctb"),

R/parser.R

@@ -99,7 +99,6 @@ parse_block = function(code, header, params.src, markdown_mode = out_format('mar
   # for quarto, preserve the actual original params.src and do not remove the engine
   if (!is_quarto() || opts_knit$get('tangle')) params.src = params
   params = xfun::csv_options(params)
-  if (is.null(params$label)) params$label = unnamed_chunk()
 
   # remove indent (and possibly markdown blockquote >) from code
   if (nzchar(spaces <- get_chunk_indent(header))) {
@@ -115,6 +114,7 @@ parse_block = function(code, header, params.src, markdown_mode = out_format('mar
   parts = partition_chunk(engine, code)
   dup = intersect(names(params), names(parts$options))
   params = merge_list(params, parts$options)
+  if (is.null(params$label)) params$label = unnamed_chunk()
   label = params$label
   if (length(dup)) warning(
     "Duplicated chunk option(s) ", paste0("'", dup, "'", collapse = ', '),