我想使用 来控制图形下方 (带星号的) 标题之间的空间量width=\linewidth。但是，当我选择 时skip=0pt，与宽度较小的图形相比，会有额外的空间。
\documentclass{scrbook}
\usepackage{caption}
\usepackage[demo]{graphicx}
\newcommand{\notes}[1]{%
\captionsetup{format=plain, skip=0pt, singlelinecheck=false, position=bottom}
\caption{Notes:\ #1}
}
\begin{document}
.
\begin{figure}
\includegraphics[width=0.99\textwidth]{}
\notes{La}
\end{figure}
\begin{figure}
\includegraphics[width=\textwidth]{}
\notes{La}
\end{figure}
\end{document}
我试过了skip=-\baselineskip，但这只适用于全宽图形（较窄的图形\notes被推入图形中）。
如何在图形和\caption(*)图形下方之间创建恒定高度。我知道我可以使用纯文本（非标题）；但是，如果图形非常窄，文本将显示在图形的侧面。
\begin{figure}
\includegraphics[width=0.5\textwidth]{}
Notes: La
\end{figure}
文件输出.log原因\listfiles：
*File List*
scrbook.cls 2015/07/02 v3.18 KOMA-Script document class (book)
scrkbase.sty 2015/07/02 v3.18 KOMA-Script package (KOMA-Script-dependent bas
ics and keyval usage)
scrbase.sty 2015/07/02 v3.18 KOMA-Script package (KOMA-Script-independent b
asics and keyval usage)
keyval.sty 2014/10/28 v1.15 key=value parser (DPC)
scrlfile.sty 2015/07/02 v3.18 KOMA-Script package (loading files)
tocbasic.sty 2015/07/02 v3.18 KOMA-Script package (handling toc-files)
scrsize11pt.clo 2015/07/02 v3.18 KOMA-Script font size class option (11pt)
typearea.sty 2015/07/02 v3.18 KOMA-Script package (type area)
caption.sty 2015/09/17 v3.3-111 Customizing captions (AR)
caption3.sty 2015/09/20 v1.7-115 caption3 kernel (AR)
graphicx.sty 2014/10/28 v1.0g Enhanced LaTeX Graphics (DPC,SPQR)
graphics.sty 2014/10/28 v1.0p Standard LaTeX Graphics (DPC,SPQR)
trig.sty 1999/03/16 v1.09 sin cos tan (DPC)
graphics.cfg 2007/01/18 v1.5 graphics configuration of teTeX/TeXLive
pdftex.def 2011/05/27 v0.06d Graphics/color for pdfTeX
infwarerr.sty 2010/04/08 v1.3 Providing info/warning/error messages (HO)
ltxcmds.sty 2011/11/09 v1.22 LaTeX kernel commands for general use (HO)
hyperref.sty 2012/11/06 v6.83m Hypertext links for LaTeX
hobsub-hyperref.sty 2012/04/25 v1.12 Bundle oberdiek, subset hyperref (HO)
hobsub-generic.sty 2012/04/25 v1.12 Bundle oberdiek, subset generic (HO)
hobsub.sty 2012/04/25 v1.12 Construct package bundles (HO)
ifluatex.sty 2010/03/01 v1.3 Provides the ifluatex switch (HO)
ifvtex.sty 2010/03/01 v1.5 Detect VTeX and its facilities (HO)
intcalc.sty 2007/09/27 v1.1 Expandable calculations with integers (HO)
ifpdf.sty 2011/01/30 v2.3 Provides the ifpdf switch (HO)
etexcmds.sty 2011/02/16 v1.5 Avoid name clashes with e-TeX commands (HO)
kvsetkeys.sty 2012/04/25 v1.16 Key value parser (HO)
kvdefinekeys.sty 2011/04/07 v1.3 Define keys (HO)
pdftexcmds.sty 2011/11/29 v0.20 Utility functions of pdfTeX for LuaTeX (HO)
pdfescape.sty 2011/11/25 v1.13 Implements pdfTeX's escape features (HO)
bigintcalc.sty 2012/04/08 v1.3 Expandable calculations on big integers (HO)
bitset.sty 2011/01/30 v1.1 Handle bit-vector datatype (HO)
uniquecounter.sty 2011/01/30 v1.2 Provide unlimited unique counter (HO)
letltxmacro.sty 2010/09/02 v1.4 Let assignment for LaTeX macros (HO)
hopatch.sty 2011/06/24 v1.1 Wrapper for package hooks (HO)
xcolor-patch.sty 2011/01/30 xcolor patch
atveryend.sty 2011/06/30 v1.8 Hooks at the very end of document (HO)
atbegshi.sty 2011/10/05 v1.16 At begin shipout hook (HO)
refcount.sty 2011/10/16 v3.4 Data extraction from label references (HO)
hycolor.sty 2011/01/30 v1.7 Color options for hyperref/bookmark (HO)
ifxetex.sty 2010/09/12 v0.6 Provides ifxetex conditional
auxhook.sty 2011/03/04 v1.3 Hooks for auxiliary files (HO)
kvoptions.sty 2011/06/30 v3.11 Key value format for package options (HO)
pd1enc.def 2012/11/06 v6.83m Hyperref: PDFDocEncoding definition (HO)
hyperref.cfg 2002/06/06 v1.2 hyperref configuration of TeXLive
url.sty 2013/09/16 ver 3.4 Verb mode for urls, etc.
hpdftex.def 2012/11/06 v6.83m Hyperref driver for pdfTeX
rerunfilecheck.sty 2011/04/15 v1.7 Rerun checks for auxiliary files (HO)
supp-pdf.mkii
nameref.sty 2012/10/27 v2.43 Cross-referencing by name of section
gettitlestring.sty 2010/12/03 v1.4 Cleanup title references (HO)
captionStar.out
captionStar.out
***********
答案1
原因是标题前的段落末尾有太多空格。TeX 最多会删除一空格，但\notes会导致行尾出现两个空格，并且 之后还有一个空格\includegraphics。
通过注释行尾删除空格，问题得到解决：
\newcommand{\notes}[1]{%
\captionsetup{format=plain, skip=0pt, singlelinecheck=false,
position=bottom}%
\caption{Notes:\ #1}%
}
简化示例。带宽度的规则\textwidth填充整行。段落结束，后面的内容\hrule应该非常接近。
\documentclass{article}
\setlength{\parindent}{0pt}
\setlength{\parskip}{10mm}
\begin{document}
Rule without space:\\
\rule{\textwidth}{1pt}\par
\hrule
Rule with one space:\\
\rule{\textwidth}{1pt} \par
\hrule
Rule with two spaces:\\
\rule{\textwidth}{1pt} \space\par
\hrule
\end{document}
在第二种情况下，TeX 会在段落末尾删除空格。第三种情况是两个空格，这是最有趣的情况。TeX 再次在段落末尾删除了第二个空格，但保留了一个空格，而前一行已满。因此 TeX 被迫创建一个换行符。在新行的开头，剩余的空格将被丢弃，留下一个空的新行，从而引发警告Underfull \hbox。