docs: format "default XXX, initially XXX" correctly

build.lua

@@ -35,7 +35,7 @@ specialformats["latex"] = specialformats["latex"] or
 checkengines = {"pdftex", "latexdvips", "latexdvisvgm", "luatex", "xetex"}
 
 -- Use multiple sets of tests
-checkconfigs = { "build", "config-gd" }
+checkconfigs = { "build", "config-gd", "config-manual" }
 
 -- For release
 ctanzip = "pgf.ctan.flatdir"
@@ -79,4 +79,3 @@ function tag_hook(tagname, tagdate)
   file:close()
   return 0
 end
-

config-manual.lua

@@ -0,0 +1,8 @@
+-- Tests for pgfmanual macros
+
+stdengine    = "luatex"
+checkengines = {"luatex"}
+testfiledir  = "testfiles-manual"
+
+-- this copies all doc sources "pgfmanual-en-xxx.tex", which are unneeded
+testsuppdir  = "./doc/generic/pgf"

doc/generic/pgf/CHANGELOG.md

@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
+## Unreleased
+
+### Fixed
+
+- Fix formatting of `default XXX, initially XXX` in key docs #1278
+
 ## [3.1.11] - 2025-08-14 Henri Menke
 
 ### BREAKING CHANGES

testfiles-manual/key-env.lvt

@@ -0,0 +1,37 @@
+% based on pgfmanual-test.tex
+\input{regression-test}
+\documentclass[a4paper,doc2]{ltxdoc}
+
+\input{pgfmanual.cfg} % default engine is LuaTeX
+\input{pgfmanual-en-main-preamble.tex}
+
+\showoutput
+
+\begin{document}
+
+\START
+
+\begin{key}{/path/x=value}
+\end{key}
+
+\begin{key}{/path/x=value (default XXX)}
+\end{key}
+
+\begin{key}{/path/x=value (initially XXX)}
+\end{key}
+
+% see #1278
+\begin{key}{/path/x=value (default XXX, initially XXX)}
+\end{key}
+
+% values containing "=", see #1325
+\begin{key}{/path/x=value (default {K=V})}
+\end{key}
+
+\begin{key}{/path/x=value (initially {K=V})}
+\end{key}
+
+\begin{key}{/path/x=value (default {K=V}, initially {K=V})}
+\end{key}
+
+\end{document}