diff --git a/R/root.R b/R/root.R
index 1e39812..880c6b8 100644
--- a/R/root.R
+++ b/R/root.R
@@ -201,12 +201,12 @@ has_file <- function(filepath, contents = NULL, n = -1L, fixed = FALSE) {
   }))
 
   desc <- paste0(
-    'contains a file "', filepath, '"',
+    "contains a file '", filepath, "'",
     if (!is.null(contents)) {
       paste0(
         " with contents ",
         if (!fixed) "matching ",
-        '"', contents, '"',
+        "'", contents, "'",
         if (n >= 0L) paste0(" in the first ", format_lines(n))
       )
     }
@@ -232,7 +232,7 @@ has_dir <- function(filepath) {
     dir.exists(testfile)
   }))
 
-  desc <- paste0('contains a directory "', filepath, '"')
+  desc <- paste0("contains a directory '", filepath, "'")
 
   root_criterion(testfun, desc)
 }
@@ -273,12 +273,12 @@ has_file_pattern <- function(pattern, contents = NULL, n = -1L, fixed = FALSE) {
   }))
 
   desc <- paste0(
-    'contains a file matching "', pattern, '"',
+    "contains a file matching '", pattern, "'",
     if (!is.null(contents)) {
       paste0(
         " with contents ",
         if (!fixed) "matching ",
-        '"', contents, '"',
+        "'", contents, "'",
         if (n >= 0L) paste0(" in the first ", format_lines(n))
       )
     }
diff --git a/tests/testthat/_snaps/root.md b/tests/testthat/_snaps/root.md
index 33a5893..8745555 100644
--- a/tests/testthat/_snaps/root.md
+++ b/tests/testthat/_snaps/root.md
@@ -3,14 +3,14 @@
     Code
       format(is_r_package)
     Output
-      [1] "Root criterion: contains a file \"DESCRIPTION\" with contents matching \"^Package: \""
+      [1] "Root criterion: contains a file 'DESCRIPTION' with contents matching '^Package: '"
 
 ---
 
     Code
       is_r_package
     Output
-      Root criterion: contains a file "DESCRIPTION" with contents matching "^Package: "
+      Root criterion: contains a file 'DESCRIPTION' with contents matching '^Package: '
 
 ---
 
@@ -18,23 +18,23 @@
       is_vcs_root
     Output
       Root criterion: one of
-      - contains a directory ".git"
-      - contains a file ".git" with contents matching "^gitdir: "
-      - contains a directory ".svn"
+      - contains a directory '.git'
+      - contains a file '.git' with contents matching '^gitdir: '
+      - contains a directory '.svn'
 
 ---
 
     Code
       has_file("a", contents = "foo", fixed = TRUE)
     Output
-      Root criterion: contains a file "a" with contents "foo"
+      Root criterion: contains a file 'a' with contents 'foo'
 
 ---
 
     Code
       has_file_pattern("a.*b", contents = "foo", fixed = TRUE)
     Output
-      Root criterion: contains a file matching "a.*b" with contents "foo"
+      Root criterion: contains a file matching 'a.*b' with contents 'foo'
 
 ---
 
@@ -42,48 +42,48 @@
       criteria
     Output
       $is_rstudio_project
-      Root criterion: contains a file matching "[.]Rproj$" with contents matching "^Version: " in the first line
+      Root criterion: contains a file matching '[.]Rproj$' with contents matching '^Version: ' in the first line
       
       $is_vscode_project
-      Root criterion: contains a directory ".vscode"
+      Root criterion: contains a directory '.vscode'
       
       $is_r_package
-      Root criterion: contains a file "DESCRIPTION" with contents matching "^Package: "
+      Root criterion: contains a file 'DESCRIPTION' with contents matching '^Package: '
       
       $is_remake_project
-      Root criterion: contains a file "remake.yml"
+      Root criterion: contains a file 'remake.yml'
       
       $is_pkgdown_project
       Root criterion: one of
-      - contains a file "_pkgdown.yml"
-      - contains a file "_pkgdown.yaml"
-      - contains a file "pkgdown/_pkgdown.yml"
-      - contains a file "pkgdown/_pkgdown.yaml"
-      - contains a file "inst/_pkgdown.yml"
-      - contains a file "inst/_pkgdown.yaml"
+      - contains a file '_pkgdown.yml'
+      - contains a file '_pkgdown.yaml'
+      - contains a file 'pkgdown/_pkgdown.yml'
+      - contains a file 'pkgdown/_pkgdown.yaml'
+      - contains a file 'inst/_pkgdown.yml'
+      - contains a file 'inst/_pkgdown.yaml'
       
       $is_renv_project
-      Root criterion: contains a file "renv.lock" with contents matching ""Packages":\s*\{"
+      Root criterion: contains a file 'renv.lock' with contents matching '"Packages":\s*\{'
       
       $is_projectile_project
-      Root criterion: contains a file ".projectile"
+      Root criterion: contains a file '.projectile'
       
       $is_quarto_project
-      Root criterion: contains a file "_quarto.yml"
+      Root criterion: contains a file '_quarto.yml'
       
       $is_git_root
       Root criterion: one of
-      - contains a directory ".git"
-      - contains a file ".git" with contents matching "^gitdir: "
+      - contains a directory '.git'
+      - contains a file '.git' with contents matching '^gitdir: '
       
       $is_svn_root
-      Root criterion: contains a directory ".svn"
+      Root criterion: contains a directory '.svn'
       
       $is_vcs_root
       Root criterion: one of
-      - contains a directory ".git"
-      - contains a file ".git" with contents matching "^gitdir: "
-      - contains a directory ".svn"
+      - contains a directory '.git'
+      - contains a file '.git' with contents matching '^gitdir: '
+      - contains a directory '.svn'
       
       $is_testthat
       Root criterion: directory name is "testthat" (also look in subdirectories: `tests/testthat`, `testthat`)
@@ -100,17 +100,17 @@
       str(criteria)
     Output
       List of 13
-       $ is_rstudio_project   : chr "Root criterion: contains a file matching \"[.]Rproj$\" with contents matching \"^Version: \" in the first line"
-       $ is_vscode_project    : chr "Root criterion: contains a directory \".vscode\""
-       $ is_r_package         : chr "Root criterion: contains a file \"DESCRIPTION\" with contents matching \"^Package: \""
-       $ is_remake_project    : chr "Root criterion: contains a file \"remake.yml\""
-       $ is_pkgdown_project   : chr [1:7] "Root criterion: one of" "- contains a file \"_pkgdown.yml\"" "- contains a file \"_pkgdown.yaml\"" "- contains a file \"pkgdown/_pkgdown.yml\"" ...
-       $ is_renv_project      : chr "Root criterion: contains a file \"renv.lock\" with contents matching \"\"Packages\":\\s*\\{\""
-       $ is_projectile_project: chr "Root criterion: contains a file \".projectile\""
-       $ is_quarto_project    : chr "Root criterion: contains a file \"_quarto.yml\""
-       $ is_git_root          : chr [1:3] "Root criterion: one of" "- contains a directory \".git\"" "- contains a file \".git\" with contents matching \"^gitdir: \""
-       $ is_svn_root          : chr "Root criterion: contains a directory \".svn\""
-       $ is_vcs_root          : chr [1:4] "Root criterion: one of" "- contains a directory \".git\"" "- contains a file \".git\" with contents matching \"^gitdir: \"" "- contains a directory \".svn\""
+       $ is_rstudio_project   : chr "Root criterion: contains a file matching '[.]Rproj$' with contents matching '^Version: ' in the first line"
+       $ is_vscode_project    : chr "Root criterion: contains a directory '.vscode'"
+       $ is_r_package         : chr "Root criterion: contains a file 'DESCRIPTION' with contents matching '^Package: '"
+       $ is_remake_project    : chr "Root criterion: contains a file 'remake.yml'"
+       $ is_pkgdown_project   : chr [1:7] "Root criterion: one of" "- contains a file '_pkgdown.yml'" "- contains a file '_pkgdown.yaml'" "- contains a file 'pkgdown/_pkgdown.yml'" ...
+       $ is_renv_project      : chr "Root criterion: contains a file 'renv.lock' with contents matching '\"Packages\":\\s*\\{'"
+       $ is_projectile_project: chr "Root criterion: contains a file '.projectile'"
+       $ is_quarto_project    : chr "Root criterion: contains a file '_quarto.yml'"
+       $ is_git_root          : chr [1:3] "Root criterion: one of" "- contains a directory '.git'" "- contains a file '.git' with contents matching '^gitdir: '"
+       $ is_svn_root          : chr "Root criterion: contains a directory '.svn'"
+       $ is_vcs_root          : chr [1:4] "Root criterion: one of" "- contains a directory '.git'" "- contains a file '.git' with contents matching '^gitdir: '" "- contains a directory '.svn'"
        $ is_testthat          : chr "Root criterion: directory name is \"testthat\" (also look in subdirectories: `tests/testthat`, `testthat`)"
        $ from_wd              : chr "Root criterion: from current working directory"
 
@@ -120,6 +120,13 @@
       comb_crit
     Output
       Root criterion: one of
-      - contains a file "DESCRIPTION" with contents matching "^Package: "
-      - contains a file matching "[.]Rproj$" with contents matching "^Version: " in the first line
+      - contains a file 'DESCRIPTION' with contents matching '^Package: '
+      - contains a file matching '[.]Rproj$' with contents matching '^Version: ' in the first line
+
+# is_renv_project prints regex-friendly-ish text
+
+    Code
+      is_renv_project
+    Output
+      Root criterion: contains a file 'renv.lock' with contents matching '"Packages":\s*\{'
 
diff --git a/tests/testthat/test-root.R b/tests/testthat/test-root.R
index 4173616..5191b6b 100644
--- a/tests/testthat/test-root.R
+++ b/tests/testthat/test-root.R
@@ -308,3 +308,10 @@ test_that("stops if depth reached", {
   # Checks that search for root terminates for very deep hierarchies
   expect_error(find_root_mocked(""), "Maximum search of [0-9]+ exceeded")
 })
+
+# The exact style of quoting here (double inside single as opposed to nested
+# double quotes) makes generating the here docs *much less fiddly*.
+# See https://github.com/r-lib/here/pull/130
+test_that("is_renv_project prints regex-friendly-ish text", {
+  expect_snapshot(is_renv_project)
+})