diff --git a/R/detect-alignment.R b/R/detect-alignment.R
index bf8ffbe7c..cab7e00a4 100644
--- a/R/detect-alignment.R
+++ b/R/detect-alignment.R
@@ -141,8 +141,8 @@ token_is_on_aligned_line <- function(pd_flat) {
     is_aligned <- length(unique(current_col)) == 1L
     if (!is_aligned || length(current_col) < 2L) {
       # check 2: left aligned after , (comma to next token)
-      current_col <- "^(,[\\s\\t]*)[^ ]*.*$" %>%
-        gsub("\\1", by_line, perl = TRUE) %>%
+      current_col <-
+        gsub(R"(^(,[\s\t]*)[^ ]*.*$)", R"(\1)", by_line, perl = TRUE) %>%
         nchar() %>%
         magrittr::subtract(1L)
 
diff --git a/R/roxygen-examples-add-remove.R b/R/roxygen-examples-add-remove.R
index 3a7ecb40b..f311c83e4 100644
--- a/R/roxygen-examples-add-remove.R
+++ b/R/roxygen-examples-add-remove.R
@@ -12,12 +12,8 @@ remove_dont_mask <- function(roxygen) {
   )
 }
 
-remove_blank_lines <- function(code) {
-  code[code != "\n"]
-}
-
 remove_roxygen_mask <- function(text) {
-  code_with_header <- gsub(pattern = "^#'\\s?", "", text)
+  code_with_header <- gsub(pattern = R"(^#'\s?)", "", text)
   remove_roxygen_header(code_with_header)
 }
 
@@ -29,7 +25,7 @@ remove_roxygen_mask <- function(text) {
 #' #' @examples c(1, 2)
 #' @keywords internal
 remove_roxygen_header <- function(text) {
-  gsub("^[\\s\t]*@examples(If)?(\\s|\t)*", "", text, perl = TRUE)
+  gsub(R"(^[\s\t]*@examples(If)?(\s|\t)*)", "", text, perl = TRUE)
 }
 
 #' Add the roxygen mask to code
diff --git a/R/roxygen-examples-find.R b/R/roxygen-examples-find.R
index bf61983c9..49955265e 100644
--- a/R/roxygen-examples-find.R
+++ b/R/roxygen-examples-find.R
@@ -5,13 +5,13 @@
 #' @param text A text consisting of code and/or roxygen comments.
 #' @keywords internal
 identify_start_to_stop_of_roxygen_examples_from_text <- function(text) {
-  starts <- grep("^#'(\\s|\t)*@examples(If\\s|\\s|\t|$)", text, perl = TRUE)
+  starts <- grep(R"{^#'(\s|\t)*@examples(If\s|\s|\t|$)}", text, perl = TRUE)
   if (length(starts) < 1L) {
     return(integer())
   }
   stop_candidates <- which(magrittr::or(
     # starts with code or a tag
-    grepl("(^[^#]|^#'[\\s\t]*@)", text, perl = TRUE),
+    grepl(R"{(^[^#]|^#'[\s\t]*@)}", text, perl = TRUE),
     # starts with a roxygen comment with a blank line after
     grepl("^ *\t*$", text) & grepl("^#' *", lead(text))
   )) %>%