Link issues/users at line starts (take two) (#2374)

Fixes #2030 (not creating links at line starts) while not breaking #2122, for most common use case.

NEWS.md

@@ -1,5 +1,6 @@
 # pkgdown (development version)
 
+* Fix parsing of github profiles and issues into links when present at the beginning of list items (@pearsonca, #2122)
 * Correct parse usage for S3 methods with non-syntactic class names (#2384).
 
 * Deprecated `build_favicon()` was removed (`build_favicons()` remains).

R/repo.R

@@ -38,12 +38,12 @@ repo_auto_link <- function(pkg, text) {
 
   if (!is.null(url$user)) {
     user_link <- paste0("\\1<a href='", url$user, "\\2'>@\\2</a>")
-    text <- gsub("(\\s|^|\\()@([-\\w]+)", user_link, text, perl = TRUE)
+    text <- gsub("(p>|\\s|^|\\()@([-\\w]+)", user_link, text, perl = TRUE)
   }
 
   if (!is.null(url$issue)) {
     issue_link <- paste0("<a href='", url$issue, "\\2'>#\\2</a>")
-    text <- gsub("(\\(|\\s)#(\\d+)", paste0("\\1", issue_link), text, perl = TRUE)
+    text <- gsub("(p>|\\(|\\s)#(\\d+)", paste0("\\1", issue_link), text, perl = TRUE)
 
     if (!is.null(pkg$repo$jira_projects)) {
       issue_link <- paste0("<a href='", url$issue, "\\1\\2'>\\1\\2</a>")

tests/testthat/test-repo.R

@@ -10,12 +10,21 @@ test_that("authors are automatically linked", {
   expect_equal(repo_auto_link(pkg, "@y"), "<a href='TEST/y'>@y</a>")
   expect_equal(repo_auto_link(pkg, " @y"), " <a href='TEST/y'>@y</a>")
   expect_equal(repo_auto_link(pkg, "(@y)"), "(<a href='TEST/y'>@y</a>)")
+
+  expect_equal(repo_auto_link(pkg, "<p>@y some other text.</p>"), "<p><a href='TEST/y'>@y</a> some other text.</p>")
 })
 
 test_that("issues are automatically linked", {
   pkg <- list(repo = repo_meta(issue = "TEST/"))
   expect_equal(repo_auto_link(pkg, "(#123"), "(<a href='TEST/123'>#123</a>")
   expect_equal(repo_auto_link(pkg, "in #123"), "in <a href='TEST/123'>#123</a>")
+  expect_equal(repo_auto_link(pkg, "<p>#123 some other text.</p>"), "<p><a href='TEST/123'>#123</a> some other text.</p>")
+  expect_equal(repo_auto_link(pkg, "<p><a href='TEST/123/'>#123</a></p>"), "<p><a href='TEST/123/'>#123</a></p>")
+})
+
+test_that("already linked issues aren't re-linked", {
+  pkg <- list(repo = repo_meta(issue = "TEST/"))
+  expect_equal(repo_auto_link(pkg, "<p><a href='NOT/ABC/'>#123</a></p>"), "<p><a href='NOT/ABC/'>#123</a></p>")
 })
 
 test_that("URLs with hash (#) are preserved", {