我正在翻译的一本书使用了“Ruby”宏，Ruby 对 LaTeX 进行了所有的预处理。
例如，文档里面有这样一个命令：
<% fig("soccer-ball") %>
调用 Ruby 脚本：
def fig(name,caption=nil,options={}) default_options = {
'anonymous'=>'default',# true means figure has no figure number, but still gets labeled (which is, e.g.,
# necessary for photo credits)
# default is false, except if caption is a null string, in which case it defaults to true
'width'=>'narrow', # 'native'=whatever the figure says it is, 'narrow'=52 mm, 'column'=76.5 mm,
# 'wide'=113 mm, 'fullpage'=171 mm
# refers to graphic, not graphic plus caption (which is greater for sidecaption option)
'sidecaption'=>false,
'sidepos'=>'t', # positioning of the side caption relative to the figure; can also be b, c
'float'=>'default', # defaults to false for narrow, true for wide or fullpage (because I couldn't get odd-even to work reliably for those if not floating)
'floatpos'=>'h', # standard latex positioning parameter for floating figures
'narrowfigwidecaption'=>false, # currently only supported with float and !anonymous
'suffix'=>'', # for use when a figure is used in more than one place, and we need to make the label unique;
# typically 'suffix'=>'2'; don't need this option on the first fig, only the second
'text'=>nil, # if it exists, puts the text in the figure rather than a graphic (name is still required for labeling)
# see macros \starttextfig and \finishtextfig
# For an example of how to do this, see SN ch. 3, "Gory details of the proof..."
# Tables and align* don't work in text, nor does \\, but paragraph breaks work;
# may be able to get around this with minipage.
'title'=>nil, # for use with 'text', goes above the text
'raw'=>false, # used for anonymous inline figures, e.g., check marks; generates a raw call to includegraphics
'textbox'=>false # marginbox(), as used in Fund.; won't work in other books, which don't have the macros in their cls files
# not yet implemeted:
# translated=false
# or just have the script autodetect whether a translated version exists!
# toc=false
# figure is to be used in table of contents
# see macros \figureintoc, \figureintocnoresize
# midtoc=false
# figure in toc is to be used in the middle of a chapter (only allowed with toc=true)
# see macro figureintocscootx
# scootdown=0
# distance by which to scoot it down (only allowed with toc=true)
# see macro figureintocscooty
# gray=false
# automagically add a gray background
# gray2=false
# automagically add a gray background if it's 2-column
# resize=true
# see macros \fignoresize, \inlinefignocaptionnoresize } unless caption.nil? then caption.gsub!(/\A\s+/,'') end # blank lines on the front make latex freak out if caption=='' then caption=nil end default_options.each {
|option,default|
if options[option]==nil then
options[option]=default
end } width=options['width'] if options['narrowfigwidecaption'] then
options['width']='wide'; options['sidecaption']=true; options['float']=false; options['anonymous']=false end
# Generate fig_widths. To regenerate these, change false to true below, and then follow # directions in ~/Documents/writing/books/physics/data/README. This data file is used by problems book. if false && width!='narrow' then
File.open('/home/bcrowell/fig_widths','a') { |f|
f.print "\"#{name}\":\"#{width}\",\n"
} end
if options['float']=='default' then
options['float']=(width=='wide' or width=='fullpage') end has_caption = !(caption.nil?) if options['anonymous']=='default' then
options['anonymous']=!has_caption end dir = find_directory_where_figure_is(name) if dir.nil? && options['text'].nil? then fatal_error("figure #{name} not found in
#{dir()}/figs or #{shared_figs()}, ch=#{$ch}") end #------------------------------------------------------------ if is_print then fig_print(name,caption,options,dir) end
#------------------------------------------------------------ if is_web then process_fig_web(name,caption,options) end end
我可以使用在文档中引用 fig \pageref{fig:soccer-ball}，但这不是 RefTeX 处理的。我必须手写。但我想通过运行类似C-c )RefTeX 中的命令来完成它。（或使用 helm-reftex 或 ivy-reftex）
没有我可以使用的图形标签。我想知道我是否可以定义一个新的 RefTeX 宏，以便它可以解析文档并找到所有提及<% fig(" ") %>并向我提供它的所有实例。
答案1
RefTeX 为此提供了一个名为 的变量reftex-label-regexps。您必须使用适当的正则表达式自定义此变量，如下所示：
<%[[:space:]]*fig("\(?1:[a-z-]+\)"
输入M-x customize-variable RET reftex-label-regexps RET，点击INS按钮，添加上面的正则表达式并点击Apply and Save。在 Emacs 中，它应该如下所示：
现在重新启动 Emacs 并打开 .tex 文件。点击 时C-c ) RET SPACE，您应该会看到一个空的 RefTeX 缓冲区。点击%查看注释标签。对我来说，它看起来像这样：
reftex-label-menu-flags如果您想默认查看注释标签，请自定义值。