Adapt short verb usages

doc/generic/pgf/CHANGELOG.md

@@ -9,6 +9,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ### Changed
 
 - Typo fixes in the manual
+- Simplify short verb `|...|` or add required preamble for it
 
 ### Contributors
 

doc/generic/pgf/pgfmanual-en-base-shadings.tex

@@ -357,7 +357,7 @@ \subsubsection{General (Functional) Shadings}
         defined, which store the individual components of \meta{color name}.
         These can also be used in the \meta{type 4 function} argument.
         %
-\begin{codeexample}[]
+\begin{codeexample}[preamble={\usepackage{shortvrb} \MakeShortVerb{\|}}]
 \pgfshadecolortorgb{orange}{\mycol}
 |\mycol|=\mycol |\mycolred|=\mycolred |\mycolgreen|=\mycolgreen |\mycolblue|=\mycolblue
 \end{codeexample}

doc/generic/pgf/pgfmanual-en-pgfkeys.tex

@@ -565,12 +565,12 @@ \subsubsection{Keys That Execute Commands}
 ``\meta{text}|+|\meta{more text}'' and wishes to store \meta{text} and
 \meta{more text} in two different macros. This can be achieved as follows:
 %
-\begin{codeexample}[]
+\begin{codeexample}[preamble={\usepackage{shortvrb} \MakeShortVerb{\|}}]
 \def\mystore#1+#2\pgfeov{\def\a{#1}\def\b{#2}}
 \pgfkeyslet{/my key/.@cmd}{\mystore}
 \pgfkeys{/my key=hello+world}
 
-|\a| is \a, |\b| is \b.
+|\a| is `\a', |\b| is `\b'.
 \end{codeexample}
 
 Naturally, defining the code to be stored in a key in the above manner is too
@@ -604,7 +604,7 @@ \subsubsection{Keys That Execute Commands}
     This command works like |\pgfkeysdef|, but it allows you to provide an
     arbitrary \meta{argument count} between $0$ and $9$ (inclusive).
     %
-\begin{codeexample}[]
+\begin{codeexample}[preamble={\usepackage{shortvrb} \MakeShortVerb{\|}}]
 \pgfkeysdefnargs{/my key}{2}{\def\a{#1}\def\b{#2}}
 \pgfkeys{/my key=
     {hello}
@@ -624,11 +624,11 @@ \subsubsection{Keys That Execute Commands}
     This command works like |\pgfkeysdefnargs|, but it allows you to provide an
     arbitrary \meta{argument pattern} rather than just a number of arguments.
     %
-\begin{codeexample}[]
+\begin{codeexample}[preamble={\usepackage{shortvrb} \MakeShortVerb{\|}}]
 \pgfkeysdefargs{/my key}{#1+#2}{\def\a{#1}\def\b{#2}}
 \pgfkeys{/my key=hello+world}
 
-|\a| is \a, |\b| is \b.
+|\a| is `\a', |\b| is `\b'.
 \end{codeexample}
     %
     Note that |\pgfkeysdefnargs| is \emph{better} when it comes to simple

doc/generic/pgf/pgfmanual-en-tikz-coordinates.tex

@@ -380,11 +380,11 @@ \subsubsection{Node Coordinate System}
         Specifies an anchor of the node. Here is an example:
         %
 \begin{codeexample}[preamble={\usetikzlibrary{arrows.meta}}]
-\begin{tikzpicture}
-  \node (shape)   at (0,2)  [draw] {|class Shape|};
-  \node (rect)    at (-2,0) [draw] {|class Rectangle|};
-  \node (circle)  at (2,0)  [draw] {|class Circle|};
-  \node (ellipse) at (6,0)  [draw] {|class Ellipse|};
+\begin{tikzpicture}[node font=\ttfamily]
+  \node (shape)   at (0,2)  [draw] {class Shape};
+  \node (rect)    at (-2,0) [draw] {class Rectangle};
+  \node (circle)  at (2,0)  [draw] {class Circle};
+  \node (ellipse) at (6,0)  [draw] {class Ellipse};
 
   \draw (node cs:name=circle,anchor=north) |- (0,1);
   \draw (node cs:name=ellipse,anchor=north) |- (0,1);