Improve documentation of next-error-highlight-no-select (bug#38778)

* doc/emacs/building.texi (Compilation Mode):
Mention next-error-highlight-no-select.

* lisp/simple.el (next-error-highlight): Add reference to
next-error-highlight-no-select.
(next-error-highlight-no-select): Add reference to
next-error-highlight.

diff --git a/doc/emacs/building.texi b/doc/emacs/building.texi
index 02f18865f39e9bbae6663f129b77e9bce1d976d2..e866eea4a297e4daddb0845795e7bb7fba989d9c 100644 (file)
--- a/doc/emacs/building.texi
+++ b/doc/emacs/building.texi
@@ -214,6 +214,7 @@ Select a buffer to be used by next invocation of @code{next-error} and
 @kindex C-x `
 @findex next-error
 @vindex next-error-highlight
+@vindex next-error-highlight-no-select
   To visit errors sequentially, type @w{@kbd{C-x `}}
 (@code{next-error}), or equivalently @kbd{M-g M-n} or @kbd{M-g n}.
 This command can be invoked from any buffer, not just a Compilation
@@ -258,7 +259,9 @@ to skip any messages.
 
   When Emacs visits the locus of an error message, it momentarily
 highlights the relevant source line.  The duration of this highlight
-is determined by the variable @code{next-error-highlight}.
+is determined by the variable @code{next-error-highlight} for the locus
+in the selected buffer, and @code{next-error-highlight-no-select} for
+the locus in non-selected buffers.
 
 @vindex compilation-context-lines
   If the @file{*compilation*} buffer is shown in a window with a left

diff --git a/lisp/simple.el b/lisp/simple.el
index 0d8072bf5f0d417d48296fd45b487186ad49eaba..cb04c982220ee1ed644f86b30c20d08efa0f9654 100644 (file)
--- a/lisp/simple.el
+++ b/lisp/simple.el
@@ -75,14 +75,16 @@ value of 1 means that nothing is amalgamated.")
   :version "22.1")
 
 (defcustom next-error-highlight 0.5
-  "Highlighting of locations in selected source buffers.
+  "Highlighting of locations in the selected buffer.
 If a number, highlight the locus in `next-error' face for the given time
 in seconds, or until the next command is executed.
 If t, highlight the locus until the next command is executed, or until
 some other locus replaces it.
 If nil, don't highlight the locus in the source buffer.
 If `fringe-arrow', indicate the locus by the fringe arrow
-indefinitely until some other locus replaces it."
+indefinitely until some other locus replaces it.
+See `next-error-highlight-no-select' to customize highlighting
+of the locus in non-selected buffers."
   :type '(choice (number :tag "Highlight for specified time")
                  (const :tag "Semipermanent highlighting" t)
                  (const :tag "No highlighting" nil)
@@ -91,12 +93,15 @@ indefinitely until some other locus replaces it."
   :version "22.1")
 
 (defcustom next-error-highlight-no-select 0.5
-  "Highlighting of locations in `next-error-no-select'.
+  "Highlighting of locations in non-selected source buffers.
+Usually non-selected buffers are displayed by `next-error-no-select'.
 If number, highlight the locus in `next-error' face for given time in seconds.
 If t, highlight the locus indefinitely until some other locus replaces it.
 If nil, don't highlight the locus in the source buffer.
 If `fringe-arrow', indicate the locus by the fringe arrow
-indefinitely until some other locus replaces it."
+indefinitely until some other locus replaces it.
+See `next-error-highlight' to customize highlighting of the locus
+in the selected buffer."
   :type '(choice (number :tag "Highlight for specified time")
                  (const :tag "Semipermanent highlighting" t)
                  (const :tag "No highlighting" nil)