Add new commands to widen/narrow tabulated list columns

* doc/emacs/buffers.texi: Document widen/contracting commands in
tabulated list mode.
* lisp/emacs-lisp/tabulated-list.el (tabulated-list-mode-map): Add
keystrokes.
(tabulated-list-widen-current-column): New command.
(tabulated-list-narrow-current-column): Ditto.  The code was
written by Boruch Baum and then tweaked by Drew Adams (bug#32106)
before some white-space changes before the commit.

1 files changed, 12 insertions, 0 deletions

diff --git a/doc/emacs/buffers.texi b/doc/emacs/buffers.texi
index 14a0a01ca8b..6face1e73cb 100644
--- a/doc/emacs/buffers.texi
+++ b/doc/emacs/buffers.texi
@@ -550,6 +550,18 @@ Sort the Buffer Menu entries according to their values in the column
 at point.  With a numeric prefix argument @var{n}, sort according to
 the @var{n}-th column (@code{tabulated-list-sort}).
 
+@item w
+@kindex w @r{(Buffer Menu)}
+@findex tabulated-list-widen-current-column
+Widen the current column width by @var{n} (the prefix numeric
+argument) characters.
+
+@item c
+@kindex c @r{(Buffer Menu)}
+@findex tabulated-list-narrow-current-column
+Make the current column contract its width by @var{n} (the prefix numeric
+argument) characters.
+
 @item T
 @findex Buffer-menu-toggle-files-only
 @kindex T @r{(Buffer Menu)}