Skip .qmd generation for .Rd files that didn't change.

R/import_man.R

@@ -162,9 +162,12 @@
 
     # Skip file when frozen
     if (isTRUE(freeze)) {
+
+        freeze_output <- if (tool == "quarto_website") destination_qmd else destination_md
+
         flag <- .is_frozen(
             input = origin_Rd,
-            output = destination_md,
+            output = freeze_output,
             hashes = hashes
         )
         if (isTRUE(flag)) {

R/render_docs.R

@@ -89,8 +89,27 @@ render_docs <- function(
                     function(f) basename(f) != "_freeze",
                     docs_files
                 )
+                docs_files <- Filter(
+                    function(f) basename(f) != "man",
+                    docs_files
+                )
             }
             fs::file_delete(docs_files)
+
+            # When freeze is on, clean up stale man-page qmds with no matching .Rd
+            if (isTRUE(freeze)) {
+                man_dir <- fs::path_join(c(docs_dir, "man"))
+                if (fs::dir_exists(man_dir)) {
+                    rd_stems <- fs::path_ext_remove(basename(
+                        list.files(fs::path_join(c(path, "man")),
+                            pattern = "\\.Rd$"
+                        )
+                    ))
+                    old_qmds <- fs::dir_ls(man_dir, regexp = "\\.qmd$")
+                    stale <- old_qmds[!fs::path_ext_remove(basename(old_qmds)) %in% rd_stems]
+                    if (length(stale)) fs::file_delete(stale)
+                }
+            }
         }
     } else {
         docs_dir <- fs::path_join(c(path, "docs"))

tests/testthat/test-freeze-quarto.R

@@ -0,0 +1,47 @@
+library(testthat)
+library(altdoc)
+
+test_that("quarto: freeze skips man pages when unchanged", {
+    skip_on_cran()
+    skip_if(!.quarto_is_installed())
+
+    ### setup: create a temp package
+    create_local_package()
+    fs::dir_create("man")
+    cat(
+        "\\name{hi}\n\\title{hi}\n\\usage{\nhi()\n}\n\\description{hi}\n",
+        file = "man/hi.Rd"
+    )
+    cat(
+      "\\name{ho}\n\\title{ho}\n\\usage{\nho()\n}\n\\description{ho}\n",
+      file = "man/ho.Rd"
+    )
+
+    setup_docs("quarto_website")
+
+    # First run
+    render_docs(freeze = TRUE, verbose = FALSE)
+
+    expect_true(fs::file_exists("_quarto/man/ho.qmd"))
+    expect_true(fs::file_exists("docs/man/ho.html"))
+    expect_true(fs::file_exists("altdoc/freeze.rds"))
+
+    mtime1 <- fs::file_info("_quarto/man/hi.qmd")$modification_time
+
+    # Delete one of the .Rd files to check that cleanup works
+    fs::file_delete("man/ho.Rd")
+
+    # Second run
+    Sys.sleep(1.1) # Ensure time difference
+    out <- capture_messages(render_docs(freeze = TRUE, verbose = FALSE))
+
+    # Check that stale files are removed
+    expect_false(fs::file_exists("_quarto/man/ho.qmd"))
+    expect_false(fs::file_exists("docs/man/ho.html"))
+
+    # Check that re-generation was skipped
+    mtime2 <- fs::file_info("_quarto/man/hi.qmd")$modification_time
+    expect_equal(mtime1, mtime2)
+
+    expect_match(paste(out, collapse = "\n"), "1 .Rd files skipped because they didn't change")
+})