066 Latex Cafb1f00

LaTeX to PDF Route

Overview

This route is for creating PDFs using native LaTeX (.tex) files compiled with Tectonic. The goal is to create professional PDFs that exceed user expectations.

Remember: When user says "make a PDF with LaTeX", they want "professional and high-quality PDF".

Workflow

Step 1: Install Environment

Tectonic is not pre-installed. Install it first:

cd ~ && curl -fsSL https://drop-sh.fullyjustified.net | sh && ls -la tectonic

Note: Tectonic will be installed to ~/tectonic (user home directory)

Compilation Command:

Must use /app/.kimi/skills/pdf/scripts/compile_latex.py script to compile. The script will automatically:

• Filter redundant package download logs
• Filter compilation progress info
• Preserve all errors and warnings
• Show PDF statistics (size, pages, word count, figures/tables)

Do NOT use Tectonic directly.

# Single compilation
python3 /app/.kimi/skills/pdf/scripts/compile_latex.py main.tex

# Multiple runs (for cross-references and bibliography)
python3 /app/.kimi/skills/pdf/scripts/compile_latex.py main.tex --runs 2

# Keep full logs (for debugging)
python3 /app/.kimi/skills/pdf/scripts/compile_latex.py main.tex --keep-logs

Step 2: Pre-Writing Analysis

Before writing .tex code, must consider:

1. Identify scenario type (formal/functional/presentation/creative)
2. Determine user needs and goals

Scenario Classification & Strategy

Formal scenario: Papers, submissions, journals, conferences, standards

• Strategy: Follow standard academic formatting, focus on correct citation standards

Functional scenario: Reports, documentation, specifications, manuals

• Strategy: Prioritize information density and readability, data presentation over visual design

Presentation scenario: Proposals, presentations, plans, demos

• Strategy: Overall professional (not too flashy), 1-2 visual highlights (cover, key data pages)

Creative scenario: Portfolios, designs, creative, branding

• Strategy: Bold color, font, content, layout choices, break conventional layouts, focus on high-impact moments

Step 3: Design Principles

When user doesn't specify style, follow this minimal but high-quality design system:

1. Contrast: Clear contrast between text/background, headings/body
2. Hierarchy: Establish visual hierarchy through size, weight, color
3. Whitespace: Proper margins and line spacing for breathing room
4. Consistency: Unified fonts, colors, spacing

Optional Components

Visual enhancement: Quote blocks, info boxes, sidebars, comparison cards (use tcolorbox) Academic/Technical: Theorem boxes (amsthm + tcolorbox), timelines, flowcharts (use TikZ) System styling: Headers/footers (fancyhdr), chapter title pages (titlesec)

When to use: Match document type, proactively use appropriate components when content fits

Core Rules

Rule 1: Compilation Error Handling - Must Fully Fix

The compilation script returns three types of issues:

1. Errors - Block compilation, must fix immediately
2. Layout Issues - Affect typesetting quality, must fix
   • Overfull \hbox / Overfull \vbox
   • Underfull \hbox / Underfull \vbox
   • Font shape not available / Missing character
3. Warnings - Other warnings, need evaluation and fixing

Unacceptable behavior:

• Saying "warnings don't affect output, can ignore"

Must do:

• Fix all issues as much as possible, especially layout issues

Rule 2: Code Length Limit & Splitting Strategy

Model can write approximately 500 lines of TeX per turn.

Criteria:

• If expected PDF is over 5 pages
• Or contains multiple complex components (3+ tables/figures, long formulas)

Then must split into multiple .tex files, combine with \input{}.

Rule 3: Required Packages & Configuration

\documentclass{article}

% Required base packages
\usepackage{graphicx}
\usepackage{xcolor}
\usepackage{geometry}
\usepackage{amsmath}  % Load before hyperref

% hyperref - MUST load last with full config for clickable links
\usepackage[
    colorlinks=true,
    linkcolor=blue,       % TOC, cross-refs
    citecolor=darkgray,   % Citations - gray for academic style
    urlcolor=blue,        % URLs
    bookmarks=true,       % PDF bookmarks
    bookmarksnumbered=true,
    unicode=true
]{hyperref}

% Recommended geometry config
\geometry{a4paper, top=2.5cm, bottom=2.5cm, left=3cm, right=2.5cm}
% For resume: \geometry{a4paper, margin=1.5cm}

% Superscript citations (academic standard)
\usepackage[numbers,super,sort&compress]{natbib}
\bibliographystyle{unsrtnat}

% Add as needed (see "Common Packages List")
\usepackage{tcolorbox}
\usepackage{colortbl}
\usepackage{booktabs}
\usepackage{enumitem}

hyperref must be loaded LAST (after most other packages) to avoid conflicts.

Rule 4: LaTeX Syntax Standards

Prohibited:

• Emoji (LaTeX doesn't support)
• Markdown *asterisk* bold syntax (causes compilation errors)

Reason: These are common model mistakes, must avoid.

Correct approach:

\textbf{bold text}
\emph{emphasized text}

Rule 5: Multilingual & Fonts

Multilingual packages:

• babel + polyglossia conflict, cannot use together
• amsmath must be loaded before polyglossia

Font related:

• Tectonic auto-downloads standard LaTeX fonts (Latin Modern, etc.)
• \setmainfont{} system fonts need detection: fc-list :lang=ar
• Recommended fonts: DejaVu, Noto series (wide coverage)

Rule 6: Clickable Navigation (All Links Must Work)

Every reference in the PDF must be clickable. This is a professional standard.

6.1 Table of Contents (Auto-Clickable)

\tableofcontents      % Main TOC - each entry clickable
\listoffigures        % List of figures - clickable
\listoftables         % List of tables - clickable

TOC is automatically clickable with hyperref. No extra config needed.

6.2 Cross-References

Labels (place immediately after the element):

\section{Introduction}\label{sec:intro}

\begin{figure}[htbp]
    \includegraphics{...}
    \caption{System architecture}\label{fig:arch}
\end{figure}

\begin{table}[htbp]
    \caption{Results}\label{tab:results}
    ...
\end{table}

\begin{equation}\label{eq:main}
    E = mc^2
\end{equation}

References (all become clickable):

As discussed in Section~\ref{sec:intro}...
Figure~\ref{fig:arch} shows...
Table~\ref{tab:results} indicates...
From Equation~\eqref{eq:main}...  % Use \eqref for equations (adds parentheses)
See page~\pageref{sec:intro}...

Best practices:

• Use ~ (non-breaking space) before \ref to prevent awkward line breaks
• Use \eqref{} for equations (auto-adds parentheses)
• Label naming: sec:, fig:, tab:, eq:, lst:

6.3 Bibliography Citations

Superscript style (Recommended for academic):

% natbib with superscript - cleanest approach
\usepackage[numbers,super,sort&compress]{natbib}
\bibliographystyle{unsrtnat}

% Usage:
This has been studied\cite{smith2023}.  % renders as: studied^[1]
Multiple refs\cite{a,b,c}.              % renders as: refs^[1-3]

\bibliography{references}

Bracket style (alternative):

\usepackage[numbers]{natbib}
\bibliographystyle{plainnat}

\cite{smith2023}    % [1]
\citep{smith2023}   % (Smith, 2023)
\citet{smith2023}   % Smith (2023)

\bibliography{references}

With biblatex:

\usepackage[backend=biber,style=numeric-comp]{biblatex}
\addbibresource{references.bib}

According to~\cite{smith2023}...

\printbibliography

6.4 URLs and External Links

\url{https://example.com}              % Plain URL
\href{https://example.com}{Click here} % Custom text
\href{mailto:a@b.com}{a@b.com}         % Email

6.5 PDF Metadata & Bookmarks

\hypersetup{
    pdftitle={Document Title},
    pdfauthor={Author Name},
    pdfsubject={Subject},
    pdfkeywords={keyword1, keyword2}
}

PDF bookmarks are auto-generated from \section, \chapter, etc.

6.6 Compilation for Cross-References

Cross-references require 2+ compilation runs:

# References show "??" after first run - this is normal
python3 /app/.kimi/skills/pdf/scripts/compile_latex.py main.tex --runs 2

# With bibliography: need 3 runs
python3 /app/.kimi/skills/pdf/scripts/compile_latex.py main.tex --runs 3

If references still show "??": Check label names match exactly.

6.7 Common Issues

Common Packages List

Required Configuration Packages

• hyperref (see Rule 3)
• geometry (see Rule 3)
• listings (\lstset{basicstyle=\ttfamily\small, numbers=left, backgroundcolor=\color{gray!5}})
• enumitem (\setlist[itemize]{itemsep=0.3em, leftmargin=1.5em})

Tables

• booktabs
• longtable
• multirow
• array
• colortbl

Graphics & Charts

• tikz
• pgfplots
• float
• wrapfig
• subfig / subcaption

Fonts / CJK

• fontspec (XeLaTeX/LuaLaTeX)
• ctex

Math / Academic

• amsmath
• amssymb
• amsthm
• biblatex
• natbib
• siunitx

Algorithm / Professional

• algorithm, algpseudocode
• chemfig

Layout Enhancement

• tcolorbox
• fancyhdr
• titlesec
• tocloft
• multicol
• setspace
• microtype
• parskip
• adjustbox
• marginnote

Code

• listings
• minted (requires Pygments)

Script Reference

Tech Stack

Important Notes

CJK Font Support

Tectonic automatically downloads required fonts including CJK fonts. No manual configuration needed.

For Chinese documents, use:

\usepackage{ctex}  % Tectonic auto-downloads fonts

First Run Download

Tectonic downloads packages on first use. Initial compilation may take longer:

• First run: 1-5 minutes (downloading packages)
• Subsequent runs: 10-30 seconds

Network Requirements

Tectonic requires network access for first compilation of new packages. If offline:

• Previously used packages are cached in ~/.cache/Tectonic/
• New packages will fail to download

Tectonic vs Traditional LaTeX