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git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@354 a592a061-630c-0410-9148-cb99ea01b6c8
270 lines
5.0 KiB
Plaintext
270 lines
5.0 KiB
Plaintext
#This file was created by <larsbj> Sun Dec 5 17:47:02 1999
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#LyX 1.0 (C) 1995-1999 Matthias Ettrich and the LyX Team
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\lyxformat 2.15
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\textclass article
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\language default
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\inputencoding default
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\fontscheme default
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\graphics default
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\paperfontsize 12
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\spacing single
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\papersize Default
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\paperpackage a4
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\use_geometry 0
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\use_amsmath 0
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\paperorientation portrait
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\secnumdepth 3
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\tocdepth 3
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\paragraph_separation indent
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\defskip medskip
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\quotes_language english
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\quotes_times 2
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\papercolumns 1
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\papersides 1
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\paperpagestyle default
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\layout Title
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User defined macros in math mode
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\layout Author
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Alejandro Aguilar Sierra
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\layout Date
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25-October-1997
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\layout Section
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Introduction
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\layout Standard
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LyX version 0.12 allows the user to define macros.
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An user defined macro in math mode is not a red colored name that LyX didn't
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know how to draw (formerly known as macro mode, now simply TeX mode).
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A macro definition box appears on screen as a grayed button with the name
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of the macro in blue (math color).
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But if you click on it, it will appear as a normal math box to allow you
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edit it.
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Just try it:
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\begin_inset FormulaMacro
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\newcommand{\macro}{a+b}
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\end_inset
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\layout Standard
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Now, to use this macro in other math boxes just type the name in TeX mode,
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in this case
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\family typewriter
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\backslash
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macro
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\family default
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, and it will be automatically expanded:
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\begin_inset Formula \( c=\macro \)
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\end_inset
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.
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As you can verify, the cursor can't go inside the macro, the whole macro
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is like a single character, and the TeX generated code of this expression
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is
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\family typewriter
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c =
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\backslash
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macro.
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\layout Standard
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However the cursor could go inside of some kind of macros, those that have
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\emph on
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arguments
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\emph default
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.
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In a macro definition box an argument looks like a
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\family typewriter
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#
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\family default
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followed by the argument number:
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\begin_inset FormulaMacro
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\newcommand{\macrowarg}[1]{2+\sqrt{#1 }}
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\end_inset
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\layout Standard
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Once expanded, this macro includes the usual empty rectangle to indicate
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that you can insert there whatever you want:
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\family typewriter
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\backslash
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macrowarg =
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\begin_inset Formula \( \macrowarg{} \)
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\end_inset
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\family default
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.
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Example:
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\begin_inset Formula \( b=\macrowarg{x-2} \)
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\end_inset
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.
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\layout Standard
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When exported to LaTeX, a macro definition will produce the command
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\family typewriter
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\backslash
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newcommand.
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\layout Section
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Directions on using macros
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\layout Subsection
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How to create them
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\layout Standard
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To create a macro definition box use this syntax in the minibuffer:
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\layout Standard
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\family typewriter
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math-macro <macro name> [number of arguments]
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\layout Standard
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Par example
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\family typewriter
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\backslash
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macro
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\family default
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was created with
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\begin_inset Quotes eld
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\end_inset
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\family typewriter
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math-macro macro
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\family default
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\begin_inset Quotes erd
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\end_inset
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, and
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\family typewriter
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\backslash
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macrowarg
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\family default
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was created with
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\begin_inset Quotes eld
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\end_inset
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\family typewriter
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math-macro macrowarg 1
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\family default
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\begin_inset Quotes erd
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\end_inset
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.
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\layout Standard
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To insert an argument mark (only inside a macro definition box) use this:
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\layout Standard
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\family typewriter
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math-macro-arg <number>
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\layout Standard
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The argument mark in
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\family typewriter
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\backslash
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macrowarg
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\family default
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was introduced with
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\begin_inset Quotes eld
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\end_inset
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\family typewriter
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math-macro-arg 1
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\family default
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\begin_inset Quotes erd
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\end_inset
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.
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\layout Standard
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You can use no more than 9 arguments, numbered from 1 to 9.
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An argument can be repeated inside the macro definition box, but of course
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can be edited only once.
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A number can't be greater than the number of arguments originally allowed
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for the macro.
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\layout Subsection
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How to navigate
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\layout Description
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With
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\protected_separator
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the
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\protected_separator
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arrow
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\protected_separator
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keys: Opening a macro form the left side will put the cursor in the first
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argument, to move to the second argument use the TAB key.
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Remember that pressing the Space bar will get the cursor out and at the
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right side of the macro.
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\layout Description
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With
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\protected_separator
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the
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\protected_separator
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mouse: As usual, click on the desired argument box.
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Sometimes this fails if the box is empty or too small.
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\layout Standard
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Currently the user can only define command macros, but internally it's possible
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to define also environment macros.
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\layout Standard
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There are several predefined macros, mainly to allow AMS-LaTeX users to
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use AMS macros in a WYSIWYM way, like
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\family typewriter
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\backslash
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cases
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\family default
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and
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\family typewriter
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\backslash
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binom
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\family default
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.
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[
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\emph on
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Pre 0.12 Note:
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\family typewriter
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\backslash
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cases
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\family default
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are currently disabled because after some simplification and improving
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of the macro stuff, the only valid arguments are subparagraphs (neither
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tabs nor newlines).
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Perhaps they will be again included before 0.12
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\emph default
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.
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AAS]
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\the_end
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