Update docs of 'xref-query-replace-in-results'

* doc/emacs/maintaining.texi (Identifier Search): Update the
documentation of 'xref-query-replace-in-results'.

diff --git a/doc/emacs/maintaining.texi b/doc/emacs/maintaining.texi
index e508e87b8dcb06cf4944c8c0db9c451504733603..9f5073674c488264cc99752b2da2a138a2e49f58 100644 (file)
--- a/doc/emacs/maintaining.texi
+++ b/doc/emacs/maintaining.texi
@@ -2317,7 +2317,8 @@ them.
 @item M-?
 Find all the references for the identifier at point.
 
-@item M-x xref-query-replace-in-results @key{RET} @var{regexp} @key{RET} @var{replacement} @key{RET}
+@itemx M-x xref-query-replace-in-results @key{RET} @var{replacement} @key{RET}
+@itemx C-u M-x xref-query-replace-in-results @key{RET} @var{regexp} @key{RET} @var{replacement} @key{RET}
 Interactively replace @var{regexp} with @var{replacement} in the names
 of all the identifiers shown in the @file{*xref*} buffer.
 
@@ -2362,13 +2363,16 @@ shown.  The default value is @code{nil}, which just shows the results
 in the @file{*xref*} buffer, but doesn't select any of them.
 
 @findex xref-query-replace-in-results
-  @kbd{M-x xref-query-replace-in-results} reads a regexp to match identifier
-names and a replacement string, just like ordinary @kbd{M-x
-query-replace-regexp}.  It then performs the specified replacement in
-the names of the matching identifiers in all the places in all the
-files where these identifiers are referenced.  This is useful when you
+  @kbd{M-x xref-query-replace-in-results} reads a @var{replacement}
+string, just like ordinary @kbd{M-x query-replace-regexp}.  It then
+renames the identifiers shown in the @file{*xref*} buffer in all the
+places in all the files where these identifiers are referenced, such
+that their new name is @var{replacement}.  This is useful when you
 rename your identifiers as part of refactoring.  This command should
-be invoked in the @file{*xref*} buffer generated by @kbd{M-?}.
+be invoked in the @file{*xref*} buffer generated by @kbd{M-?}.  With a
+prefix argument, the command also prompts for a regexp to match
+identifier names, and renames that regexp in the names of the matching
+identifiers with @var{replacement}.
 
 @findex xref-find-references-and-replace
   @kbd{M-x xref-find-references-and-replace} works similarly to