3 files changed, 19 insertions, 5 deletions

diff --git a/doc/emacs/building.texi b/doc/emacs/building.texi
index 78d07b8d39e..518d157e4ee 100644
--- a/doc/emacs/building.texi
+++ b/doc/emacs/building.texi
@@ -151,6 +151,20 @@ with the mouse (@pxref{Mouse References}), to visit the @dfn{locus} of
 the error message in a separate window.  The locus is the specific
 position in a file where that error occurred.
 
+@cindex compilation mode faces
+@vindex compilation-error
+@vindex compilation-warning
+  The appearance of the @file{*compilation*} buffer can be controlled
+by customizing the faces which are used to highlight parts of the
+@file{*compilation*} buffer, e.g., @code{compilation-error} or
+@code{compilation-warning}, for error and warning messages
+respectively.  Note that since those faces inherit from the
+@code{error} and @code{warning} faces, it is also possible to
+customize the parent face directly instead.
+
+  Use @w{@kbd{M-x customize-group RET compilation}} to see the entire
+list of customization variables and faces.
+
 @findex compile-goto-error
 @vindex compilation-auto-jump-to-first-error
   If you change the variable
diff --git a/doc/emacs/maintaining.texi b/doc/emacs/maintaining.texi
index fd0119e98ce..4986c111030 100644
--- a/doc/emacs/maintaining.texi
+++ b/doc/emacs/maintaining.texi
@@ -1093,8 +1093,7 @@ started editing, and asks for confirmation for discarding the changes.
 If you agree, the fileset is reverted.  If you don't want @kbd{C-x v
 u} to show a diff, set the variable @code{vc-revert-show-diff} to
 @code{nil} (you can still view the diff directly with @kbd{C-x v =};
-@pxref{Old Revisions}).  Note that @kbd{C-x v u} cannot be reversed
-with the usual undo commands (@pxref{Undo}), so use it with care.
+@pxref{Old Revisions}).
 
   On locking-based version control systems, @kbd{C-x v u} leaves files
 unlocked; you must lock again to resume editing.  You can also use
diff --git a/doc/emacs/trouble.texi b/doc/emacs/trouble.texi
index 1bdd9fa0141..2fe54878058 100644
--- a/doc/emacs/trouble.texi
+++ b/doc/emacs/trouble.texi
@@ -1400,9 +1400,10 @@ to the FSF@.  For the reasons behind this, see
 @url{https://www.gnu.org/licenses/why-assign.html}.
 
 Copyright assignment is a simple process.  Residents of some countries
-can do it entirely electronically.  We can help you get started, and
-answer any questions you may have (or point you to the people with the
-answers), at the @email{emacs-devel@@gnu.org} mailing list.
+can do it entirely electronically.  We can help you get started,
+including sending you the forms you should fill, and answer any
+questions you may have (or point you to the people with the answers),
+at the @email{emacs-devel@@gnu.org} mailing list.
 
 (Please note: general discussion about why some GNU projects ask
 for a copyright assignment is off-topic for emacs-devel.