Merge pull request #896 from latex3/gh879

adjust fd file for issue #879

base/changes.txt

@@ -6,6 +6,11 @@ completeness or accuracy and it contains some references to files that
 are not part of the distribution.
 ================================================================================
 
+2022-07-10  David Carlisle  <David.Carlisle@latex-project.org>
+
+	* cmfonts.fdd: avoid EC sans serif fonts at small design sizes.
+	The medium weight is bolder and wider than the bold extended.
+	Scale the 8pt font for sizes 5,6,7. gh/879
 
 2022-06-22  David Carlisle  <David.Carlisle@latex-project.org>
 
@@ -20,6 +25,11 @@ are not part of the distribution.
 	* cmfonts.fdd
 	Add font definitions for slanted small caps (gh/782)
 
+2022-06-10  Ulrike Fischer <Ulrike.Fischer@latex-project.org>
+
+	* cmfonts.fdd
+	Add font definitions for slanted small caps (gh/782)
+
 ================================================================================
 All changes above are only part of the development branch for the next release.
 ================================================================================	

base/cmfonts.fdd

@@ -1,6 +1,6 @@
 % \iffalse meta-comment
 %
-% Copyright 1993-2019
+% Copyright 1993-2022
 % The LaTeX Project and any individual authors listed elsewhere
 % in this file.
 %
@@ -67,7 +67,7 @@
 %<*driver,  >
              \ProvidesFile{cmfonts.drv}
 %</driver,  >
-        [2022/06/10 v2.5k Standard LaTeX font definitions]
+        [2022/07/10 v2.5l Standard LaTeX font definitions]
 %
 %<*driver>
 \documentclass{ltxdoc}
@@ -261,13 +261,13 @@
 %    (thanks to Christian Cornelssen)}
 %    \begin{macrocode}
 %<*new|ec>
-%<*!tt>
+%<*!tt&!T1cmss>
 \providecommand{\EC@family}[5]{%
   \DeclareFontShape{#1}{#2}{#3}{#4}%
   {<5><6><7><8><9><10><10.95><12><14.4>%
 %<ec>   <17.28><20.74><24.88><29.86><35.83>genb*#5}{}}
 %<!ec>   <17.28><20.74><24.88>genb*#5}{}}
-%</!tt>
+%</!tt&!T1cmss>
 %    \end{macrocode}
 % For monospaced fonts, the normal interpolation breaks down below
 % 8pt, so scale the 8pt fonts instead.
@@ -282,6 +282,21 @@
 %<ec>  <35.83>genb*#5}{}}
 %<!ec>  <9><10><10.95><12><14.4><17.28><20.74><24.88>genb*#5}{}}
 %</tt>
+%    \end{macrocode}
+% \changes{v2.5l}{2022/07/10}%
+%         {Avoid ec ss fonts at design size 5, 6, 7. gh/879}
+% For ec cmss fonts avoid the small design sizes which have incorrect
+% definitions.
+% (Medium weight bolder and wider than bold extended for 5pt and 6pt,
+% 7pt does not have expected contrast. Scale 8pt, matching |fix-cm|).
+% gh/879
+%    \begin{macrocode}
+%<*T1cmss>
+\providecommand{\EC@ssfamily}[5]{%
+  \DeclareFontShape{#1}{#2}{#3}{#4}%
+  {<5><6><7><8>#50800%
+   <9><10><10.95><12><14.4><17.28><20.74><24.88><29.86><35.83>genb*#5}{}}
+%</T1cmss>
 %</new|ec>
 %    \end{macrocode}
 %
@@ -494,12 +509,12 @@
 %      {EC fonts}
 %    \begin{macrocode}
 %<*ec>
-\EC@family{T1}{cmss}{m}{n}{ecss}
-\EC@family{T1}{cmss}{m}{sl}{ecsi}
-\EC@family{T1}{cmss}{m}{it}{ecsi}
-\EC@family{T1}{cmss}{bx}{n}{ecsx}
-\EC@family{T1}{cmss}{bx}{it}{ecso}
-\EC@family{T1}{cmss}{bx}{sl}{ecso}
+\EC@ssfamily{T1}{cmss}{m}{n}{ecss}
+\EC@ssfamily{T1}{cmss}{m}{sl}{ecsi}
+\EC@ssfamily{T1}{cmss}{m}{it}{ecsi}
+\EC@ssfamily{T1}{cmss}{bx}{n}{ecsx}
+\EC@ssfamily{T1}{cmss}{bx}{it}{ecso}
+\EC@ssfamily{T1}{cmss}{bx}{sl}{ecso}
 %</ec>
 %    \end{macrocode}
 %    The next substitution is very questionable.

base/doc/ltnews36.tex

@@ -166,6 +166,16 @@ \subsection{Support for slanted small caps in the EC-fonts }
 %
 \githubissue{782}
 
+
+\subsection{EC sans serif at small sizes}
+The EC (T1 encoded Computer Modern) sans serif fonts have errors at
+small sizes.  (The medium weight is bolder and wider than the bold
+extended) The default \texttt{.fd} file has been adjusted to use a
+scaled 8pt font.
+%
+\githubissue{879}
+
+
 \section{Bug fixes}
 
 \section{Changes to packages in the \pkg{amsmath} category}

base/testfiles/github-0879.lvt

@@ -0,0 +1,38 @@
+
+\documentclass{article}
+
+\input{test2e}
+
+% testfor gh/879; bold extended should be wider than medium
+
+\def\TEST#1#2#3{%
+\sbox0{\fontsize{#3}{#3}\usefont{T1}{cmss}{m}{#1}%
+One TWO three FOUR five}%
+\sbox2{\fontsize{#3}{#3}\usefont{T1}{cmss}{#2}{#1}%
+One TWO three FOUR five}%
+%\par\usebox{0}: #1 m #3
+%\par\usebox{2}: #1 #2 #3
+\typeout{#1/#2/#3:\ifnum#3<10 \space\fi m\ifdim\wd0>\wd2 >\else<=\fi#2}}
+
+\def\TTEST#1#2{%
+\TEST{#1}{#2}{12}
+\TEST{#1}{#2}{10}
+\TEST{#1}{#2}{9}
+\TEST{#1}{#2}{8}
+\TEST{#1}{#2}{7}
+\TEST{#1}{#2}{6}
+\TEST{#1}{#2}{5}
+}
+
+\begin{document}
+
+\START
+
+\TTEST{n}{bx}
+\TTEST{sl}{bx}
+\TTEST{it}{bx}
+
+\TTEST{n}{sbc}
+
+
+\end{document}

base/testfiles/github-0879.tlg

@@ -0,0 +1,32 @@
+This is a generated file for the LaTeX2e validation system.
+Don't change this file in any respect.
+LaTeX Font Info:    Trying to load font information for T1+cmss on input line ....
+n/bx/12:m<=bx
+n/bx/10:m<=bx
+n/bx/9: m<=bx
+n/bx/8: m<=bx
+n/bx/7: m<=bx
+n/bx/6: m<=bx
+n/bx/5: m<=bx
+sl/bx/12:m<=bx
+sl/bx/10:m<=bx
+sl/bx/9: m<=bx
+sl/bx/8: m<=bx
+sl/bx/7: m<=bx
+sl/bx/6: m<=bx
+sl/bx/5: m<=bx
+it/bx/12:m<=bx
+it/bx/10:m<=bx
+it/bx/9: m<=bx
+it/bx/8: m<=bx
+it/bx/7: m<=bx
+it/bx/6: m<=bx
+it/bx/5: m<=bx
+n/sbc/12:m>sbc
+n/sbc/10:m>sbc
+n/sbc/9: m>sbc
+n/sbc/8: m>sbc
+n/sbc/7: m>sbc
+n/sbc/6: m>sbc
+n/sbc/5: m>sbc
+(github-0879.aux)

required/latex-lab/testfiles/documentmetadata-support-000.luatex.tlg

@@ -24,13 +24,6 @@ Package: l3ref-tmp ....-..-.. L3 Experimental cross-referencing
 \g__pdf_backend_page_int=\count...
 ) (../pdfmanagement-firstaid.sty
 Package: pdfmanagement-firstaid ....-..-.. v... LaTeX PDF management testphase bundle / firstaid-patches
-! LaTeX3 Error: Inconsistent local/global assignment
-For immediate help type H <return>.
- ...                                              
-l. ...   }
-This is a coding error.
-Local assignment to a global variable
-'\g__pdfmanagement_firstaid_fontspec_bool'.
 (../output-patches-tmp-ltx.sty
 Package: output-patches-tmp-ltx ....-..-.. v... Temporary patches of output commands
 (../etoolbox.sty