Initial commit: Klammertext source distribution

Curated source subset assembled by klammertext-dev's doc/make_dist.sh: the Klammermachine (mac), the Standard Klammer Set (sks), the commands (com), editor plugins and install guides (doc), a test subset (tst), and lib/bin placeholders. Builds with 'make -C com'.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

sks/section/sty/titles.sty

@@ -0,0 +1,123 @@
+% Section heading formatting for the SKS @document klammer.
+%
+% The \sect command dispatches between book and article document classes.
+% Section klammers (@s1-@s7) emit \sA-\sE, which expand to the appropriate
+% LaTeX sectioning command based on \documentisbook. The \defineheading
+% utility eliminates duplication across heading levels.
+
+\usepackage[bf,sf,big,raggedright,compact,newlinetospace,explicit,pagestyles,clearempty]{titlesec}
+\usepackage{etoolbox}
+\usepackage{ifthen}
+
+% --- Structure dispatch ---
+
+% Select first or second argument based on document class:
+\newcommand{\sect}[2]{\ifthenelse{\equal{\documentisbook}{true}}{#1}{#2}}
+
+% Sectioning commands, shifted by structure:
+\newcommand{\sA}{\sect{\chapter}{\section}}
+\newcommand{\sB}{\sect{\section}{\subsection}}
+\newcommand{\sC}{\sect{\subsection}{\subsubsection}}
+\newcommand{\sD}{\sect{\subsubsection}{\paragraph}}
+\newcommand{\sE}{\sect{\paragraph}{\subparagraph}}
+
+% Counters, shifted by structure:
+\newcommand{\snA}{\sect{\thechapter}{\thesection}}
+\newcommand{\snB}{\sect{\thesection}{\thesubsection}}
+\newcommand{\snC}{\sect{\thesubsection}{\thesubsubsection}}
+\newcommand{\snD}{\sect{\thesubsubsection}{\theparagraph}}
+\newcommand{\snE}{\sect{\theparagraph}{\thesubparagraph}}
+
+% Font sizes, shifted by structure:
+\newcommand{\fsect}[2]{\ifthenelse{\equal{\documentisbook}{true}}{\sfont{#1}}{\sfont{#2}}}
+\newcommand{\fA}{\fsect{1.6}{1.2}}
+\newcommand{\fB}{\fsect{1.2}{1.1}}
+\newcommand{\fC}{\fsect{1.1}{1.1}}
+\newcommand{\fD}{\fsect{1.1}{1.1}}
+\newcommand{\fE}{\fsect{1.1}{1.1}}
+
+% --- Shared heading parameters ---
+
+\newlength{\beforeheading}\setlength{\beforeheading}{4pt}
+\newlength{\afterheading}\setlength{\afterheading}{-4pt}
+\newcommand{\numsep}{8pt}
+
+% Outdent section numbers into the left margin:
+\newlength{\sectionoutdent}
+\newcommand{\numleft}[1]{%
+  \ifthenelse{\equal{#1}{}}%
+    {}%
+    {\setlength{\sectionoutdent}{0pt-\widthof{#1}-8pt}%
+     \hspace*{\sectionoutdent}}}
+
+% --- Heading definition utility ---
+
+% Define titleformat and titlespacing for a heading level.
+%   #1 = LaTeX sectioning command (e.g., \section, \chapter)
+%   #2 = font command (e.g., \fA)
+%   #3 = counter (e.g., \thesection, \thechapter)
+\newcommand{\defineheading}[3]{%
+  \titlespacing*{name=#1}{0pt}{\beforeheading}{\afterheading}%
+  \titleformat{name=#1}[block]%
+    {#2\numleft{#3}}%
+    {#2#3}%
+    {\numsep}%
+    {##1}%
+  \titlespacing*{name=#1,numberless}{0pt}{\beforeheading}{\afterheading}%
+  \titleformat{name=#1,numberless}[block]%
+    {#2}%
+    {}%
+    {0pt}%
+    {##1}%
+}
+
+% --- Heading definitions ---
+%
+% Register \titleformat for the actual LaTeX sectioning commands, not for
+% \sA-\sE.  When \sA{title} is used in the document, TeX expands \sA to
+% \section or \chapter, and titlesec intercepts that command.  Formatting
+% registered for \sA would never be reached.
+
+% In book structure, chapters start on recto (odd) pages.  titlesec
+% replaces \chapter's internals and ignores the book class's openright
+% default, using \clearpage instead of \cleardoublepage.  The
+% \chapterbreak hook restores recto-start behavior.
+\ifthenelse{\equal{\documentisbook}{true}}{%
+  \newcommand{\chapterbreak}{\cleardoublepage}
+  \titleclass{\chapter}{top}
+  \defineheading{\chapter}{\fA}{\thechapter}
+  \defineheading{\section}{\fB}{\thesection}
+  \defineheading{\subsection}{\fC}{\thesubsection}
+  \defineheading{\subsubsection}{\fD}{\thesubsubsection}
+  \defineheading{\paragraph}{\fE}{\theparagraph}
+}{%
+  \defineheading{\section}{\fA}{\thesection}
+  \defineheading{\subsection}{\fB}{\thesubsection}
+  \defineheading{\subsubsection}{\fC}{\thesubsubsection}
+  \defineheading{\paragraph}{\fD}{\theparagraph}
+  \defineheading{\subparagraph}{\fE}{\thesubparagraph}
+}
+
+% --- Counter resets ---
+
+\makeatletter
+\@addtoreset{paragraph}{section}
+\@addtoreset{paragraph}{subsection}
+\@addtoreset{paragraph}{subsubsection}
+
+\@addtoreset{subparagraph}{section}
+\@addtoreset{subparagraph}{subsection}
+\@addtoreset{subparagraph}{subsubsection}
+\@addtoreset{subparagraph}{paragraph}
+\makeatother
+
+\setcounter{secnumdepth}{6}
+\setcounter{tocdepth}{6}
+
+% --- Part ---
+
+\newcounter{partnumber}
+\stepcounter{partnumber}
+
+\newcommand{\partspace}{\hspace*{64pt}}
+\newcommand{\partindent}[1]{\partspace\large\bfseries #1}