Allow tabs to have consistent given names

* lisp/tab-bar.el (tab-bar--tab): Pull automatic name information from
current tab
(tab-bar--current-tab): Pull automatic name information from current
tab, or from new optional template argument
(tab-bar-select-tab): Pass the target tab as a template when setting
it as current tab
(tab-bar-rename-tab, tab-bar-rename-tab-by-name): New functions
* doc/emacs/frames.texi (Tab Bars): Document new tab rename functionality.

1 files changed, 4 insertions, 0 deletions

diff --git a/doc/emacs/frames.texi b/doc/emacs/frames.texi
index f93c5b168b1..452c167c726 100644
--- a/doc/emacs/frames.texi
+++ b/doc/emacs/frames.texi
@@ -1282,6 +1282,10 @@ runs @code{find-file-other-tab}.  @xref{Visiting}.
 @item C-x 6 d @var{directory} @key{RET}
 Select a Dired buffer for directory @var{directory} in another tab.
 This runs @code{dired-other-tab}.  @xref{Dired}.
+@item C-x 6 r @var{tabname} @key{RET}
+Renames the current tab to @var{tabname}.  You can control the
+programmatic name given to a tab by default by customizing the
+variable @code{tab-bar-tab-name-function}.
 @end table
 
 @vindex tab-bar-new-tab-choice