Fix some Texinfo markup in manuals

* doc/emacs/macos.texi (Mac / GNUstep Customization):
* doc/lispintro/emacs-lisp-intro.texi (condition-case):
* doc/lispref/control.texi (pcase Macro):
* doc/lispref/debugging.texi (Internals of Debugger):
* doc/lispref/internals.texi (Building Emacs):
* doc/lispref/modes.texi (Imenu):
(Parser-based Font Lock, Parser-based Indentation):
* doc/lispref/parsing.texi (Retrieving Nodes, Tree-sitter C API):
* doc/lispref/processes.texi (Network, Bindat Types):
* doc/lispref/searching.texi (Rx Functions):
* doc/lispref/text.texi (Replacing):
* doc/lispref/windows.texi (Textual Scrolling):
* doc/misc/calc.texi (Killing From Stack, Customizing Calc):
* doc/misc/cc-mode.texi (Misc Font Locking, List Line-Up):
* doc/misc/ede.texi (ede-cpp-root-project)
(ede-proj-target-makefile, ede-sourcecode):
* doc/misc/ert.texi (Running Tests in Batch Mode):
* doc/misc/eudc.texi (Emacs-only Configuration, The Server Hotlist):
* doc/misc/eww.texi (Advanced):
* doc/misc/flymake.texi (Starting Flymake)
(Proc customization variables):
* doc/misc/tramp.texi (File name completion):
* doc/misc/gnus.texi (Summary Buffer Lines, Gnus Registry Setup)
(Fancy splitting to parent, Customizing the IMAP Connection)
(Mail Source Specifiers, Agent as Cache): Consistently mark up nil
and t as @code.  Also fix the markup and wording of some surrounding
text (bug#64016).

* doc/lispref/display.texi (SVG Images, Icons):
* doc/lispref/modes.texi (Customizing Keywords): Prefer ASCII
apostrophe over Unicode right single quotation mark.

1 files changed, 14 insertions, 9 deletions

diff --git a/doc/misc/flymake.texi b/doc/misc/flymake.texi
index 03d296a1d42..c7c46896709 100644
--- a/doc/misc/flymake.texi
+++ b/doc/misc/flymake.texi
@@ -115,11 +115,11 @@ Syntax checks happen ``on-the-fly''.  Each check is started whenever:
 @itemize @bullet
 @item
 @code{flymake-mode} is started, unless
-@code{flymake-start-on-flymake-mode} is nil;
+@code{flymake-start-on-flymake-mode} is @code{nil};
 
 @item
 the buffer is saved, unless @code{flymake-start-on-save-buffer} is
-nil;
+@code{nil};
 
 @item
 some changes were made to the buffer more than @code{0.5} seconds ago
@@ -876,13 +876,18 @@ Patterns for error/warning messages in the form @code{(regexp file-idx
 line-idx col-idx err-text-idx)}.  @xref{Parsing the output}.
 
 @item flymake-proc-diagnostic-type-pred
-A function to classify a diagnostic text as particular type of error.
-Should be a function taking an error text and returning a diagnostic
-symbol (@pxref{Flymake error types}).  If non-@code{nil} is returned but
-there is no such symbol in that table, a warning is assumed.  If nil
-is returned, an error is assumed.  Can also be a regular expression
-that should match only warnings.  This variable replaces the old
-@code{flymake-warning-re} and @code{flymake-warning-predicate}.
+A function to classify a diagnostic text as a particular type of
+error.  The value of this variable should be a function taking an
+error text and returning a diagnostic symbol (@pxref{Flymake error
+types}).  If it returns a non-@code{nil} value but there is no such
+symbol in that table, the text is interpreted as a warning.  If the
+function returns @code{nil}, the text is assumed to be an error.
+
+The value of this variable can alternatively be a regular expression
+that should match only warnings.
+
+This variable replaces the old @code{flymake-warning-re} and
+@code{flymake-warning-predicate}.
 
 @item flymake-proc-compilation-prevents-syntax-check
 A flag indicating whether compilation and syntax check of the same