bug#47981: [PATCH] Add newline and tab matching information to query-replace-regexp docstring.

[Eric Skoglund <eric@pagefault.se>]

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When using query-replace-regexp to match a newline I missed the
minibuffer information to use C-q C-j instead if '\n'. I could also not
find the information in the documentation for the function.

This patch adds that information.

// Eric Skoglund

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From 542166d749ac151d401ea8eec56dbb5bafbddf45 Mon Sep 17 00:00:00 2001
From: Eric Skoglund <eric@pagefault.se>
Date: Fri, 23 Apr 2021 22:10:07 +0200
Subject: [PATCH] Add newline and tab matching documentation to
 query-replace-regexp

* lisp/replace.el: Add \n and \t matching information to
query-replace-regexp docstring.
---
 lisp/replace.el | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lisp/replace.el b/lisp/replace.el
index b5dea61924..970473f509 100644
--- a/lisp/replace.el
+++ b/lisp/replace.el
@@ -432,6 +432,9 @@ query-replace-regexp
 of the region.  Otherwise, operate from point to the end of the buffer's
 accessible portion.
 
+Matching a newline with `\n' will not work, use `C-q C-j' instead.
+Similarly to match a tab character (`\t') just press `TAB'.
+
 Use \\<minibuffer-local-map>\\[next-history-element] \
 to pull the last incremental search regexp to the minibuffer
 that reads REGEXP, or invoke replacements from
-- 
2.30.2