Add instructions for YAML chunk syntax update

Author: jabenninghoff

NEWS.md

@@ -1,3 +1,7 @@
+# rdev 1.15.6
+
+* Added instructions for YAML chunk syntax update to `upkeep_checklist()`
+
 # rdev 1.15.5
 
 * Added items for ggplot2 version 4 upgrade and switch to YAML chunk [options](https://yihui.org/knitr/options/) to `upkeep_checklist()`

R/upkeep.R

@@ -114,7 +114,16 @@ upkeep_checklist <- function(last_upkeep = last_upkeep_year()) { # nolint: cyclo
         "Update for ggplot2 [version 4](https://tidyverse.org/blog/2025/09/ggplot2-4-0-0/)",
         uses_ggplot2
       ),
-      todo("Switch to chunk option YAML [syntax](https://yihui.org/knitr/options/"),
+      todo("Switch to chunk option YAML [syntax](https://yihui.org/knitr/options/)"),
+      "",
+      "Update to YAML chunk syntax using:",
+      "",
+      "```",
+      paste0(
+        'lapply(list.files(pattern = "\\\\.Rmd$", recursive = TRUE), knitr::convert_chunk_header, ',
+        'output = identity, type = "yaml", width = 100)'
+      ),
+      "```",
       ""
     )
   }

tests/testthat/test-upkeep.R

@@ -18,7 +18,7 @@ test_that("use_upkeep_issue validates arguments", {
 
 # upkeep_checklist
 
-base_length <- 37
+base_length <- 43
 
 test_that("upkeep_checklist is expected length for first upkeep", {
   usethis::ui_silence(local_temppkg(type = "rdev"))
@@ -75,5 +75,5 @@ test_that("upkeep_checklist is expected length for last upkeep year", {
   expect_length(upkeep_checklist(2023), base_length - 11)
   expect_length(upkeep_checklist(2024), base_length - 16)
   expect_length(upkeep_checklist(2025), base_length - 16)
-  expect_length(upkeep_checklist(2026), base_length - 24)
+  expect_length(upkeep_checklist(2026), base_length - 30)
 })