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There are some options you can customize affecting which processors are invoked or the way this is done and which output they produce as a result. These options control if DVI or PDF output should be produced, if TeX should be started in interactive or nonstop mode, if source specials or a SyncTeX file should be produced for making inverse and forward search possible or which TeX engine should be used instead of regular TeX, like PDFTeX, Omega or XeTeX, and the style error messages are printed with.
(C-c C-t C-p)
This command toggles the PDF mode of AUCTeX, a buffer-local
minor mode which is enabled by default. You can customize
TeX-PDF-mode to give it a different default or set it as a file
local variable on a per-document basis. This option usually results in
calling either PDFTeX or ordinary TeX.
If this is set, DVI will also be produced by calling
\pdfoutput=0. This makes it possible to use
PDFTeX features like character protrusion even when producing
DVI files. Contemporary TeX distributions do this anyway,
so that you need not enable the option within AUCTeX.
(C-c C-t C-i) This command toggles the interactive mode of
AUCTeX, a global minor mode. You can customize
TeX-interactive-mode to give it a different default. In
interactive mode, TeX will pause with an error prompt when errors are
encountered and wait for the user to type something.
(C-c C-t C-s) Toggles support for forward and inverse search. Forward search refers to jumping to the place in the previewed document corresponding to where point is located in the document source and inverse search to the other way round. See I/O Correlation.
You can permanently activate
customizing the variable
TeX-source-correlate-mode. There is a
bunch of customization options for the mode, use M-x
customize-group <RET> TeX-view <RET> to find out more.
AUCTeX is aware of three different means to do I/O correlation:
source specials (only DVI output), the pdfsync LaTeX package (only
PDF output) and SyncTeX. The choice between source specials and
SyncTeX can be controlled with the variable
Should you use source specials it has to be stressed very strongly however, that source specials can cause differences in page breaks and spacing, can seriously interfere with various packages and should thus never be used for the final version of a document. In particular, fine-tuning the page breaks should be done with source specials switched off.
Sometimes you are requested, by journal rules or packages, to compile
the document into DVI output. Thus, if you want a
PDF document in the end you can either use XeTeX engine,
see below for information about how to set engines, or compile the
tex and then convert to PDF with
ps2pdf before viewing it. The latter can be
done automatically in AUCTeX by setting the
TeX-PDF-via-dvips-ps2pdf variable to a non-nil value.
TeX-PDF-mode set to non-nil, if
TeX-PDF-via-dvips-ps2pdf is non-nil too, the document is compiled
latex) instead of
pdflatex). When the document is ready, C-c C-c will
suggest to run
dvips and then
ps2pdf in order to
convert the DVI file to PDF. When the PDF
file is finally ready, the next suggested command will be to open the
This option can also be set as a file local variable, in order to use
ps2pdf on a
Recall the whole sequence of C-c C-c commands can be replace by the single C-c C-a.
AUCTeX also allows you to easily select different TeX engines for
processing, either by using the entries in the ‘TeXing Options’
submenu below the ‘Command’ menu or by calling the function
TeX-engine-set. These eventually set the variable
TeX-engine which you can also modify directly.
This variable allows you to choose which TeX engine should be used
for typesetting the document, i.e. the executables which will be used
when you invoke the ‘TeX’ or ‘LaTeX’ commands. The value
should be one of the symbols defined in
TeX-engine-alist. The symbols ‘default’, ‘xetex’,
‘luatex’ and ‘omega’ are available from the built-in list.
TeX-engine is buffer-local, so setting the variable
directly or via the above mentioned menu or function will not take
effect in other buffers. If you want to activate an engine for all
AUCTeX modes, set
TeX-engine in your init file, e.g. by using
M-x customize-variable <RET>. If you want to activate it for a
certain AUCTeX mode only, set the variable in the respective mode
hook. If you want to activate it for certain files, set it through file
variables (see (emacs)File Variables section ‘File Variables’ in The Emacs Editor).
Should you need to change the executable names related to the different
engine settings, there are some variables you can tweak. Those are
ConTeXt-Omega-engine. The rest of the executables is defined
TeX-engine-alist-builtin. If you want to override an
entry from that, add an entry to
TeX-engine-alist that starts
with the same symbol as that the entry in the built-in list and specify
the executables you want to use instead. You can also add entries to
TeX-engine-alist in order to add support for engines not covered
Alist of TeX engines and associated commands. Each entry is a list with a maximum of five elements. The first element is a symbol used to identify the engine. The second is a string describing the engine. The third is the command to be used for plain TeX. The fourth is the command to be used for LaTeX. The fifth is the command to be used for the ‘--engine’ parameter of ConTeXt’s ‘texexec’ program. Each command can either be a variable or a string. An empty string or nil means there is no command available.
In some systems, Emacs cannot inherit the PATH environment variable from
the shell and thus AUCTeX may not be able to run TeX commands.
Before running them, AUCTeX checks if it able to find those commands
and will warn you in case it fails. You can skip this test by changing
If non-nil, AUCTeX will check if it is able to find a working TeX
distribution before running TeX, LaTeX, ConTeXt, etc. It
actually checks if can run
TeX-command command or the shell
returns a command not found error. The error code returned by the shell
in this case can be set in
Some LaTeX packages requires the document to be compiled with a
specific engine. Notable examples are fontspec and polyglossia
packages, which require LuaTeX and XeTeX engines. If you try to
compile a document which loads one of such packages and the set engine
is not one of those allowed you will be asked to select a different
engine before running the LaTeX command. If you do not want to be
warned by AUCTeX in these cases, customize the option
This boolean option controls whether AUCTeX should check the correct engine has been set before running LaTeX commands.
As shown above, AUCTeX handles in a special way most of the main
options that can be given to the TeX processors. When you need to
pass to the TeX processor arbitrary options not handled by AUCTeX,
you can use the file local variable
String with the extra options to be given to the TeX processor. For example, if you need to enable the shell escape feature to compile a document, add the following line to the list of local variables of the source file:
%%% TeX-command-extra-options: "-shell-escape"
By default this option is not safe as a file-local variable because a specially crafted document compiled with shell escape enabled can be used for malicious purposes.
You can customize AUCTeX to show the processor output as it is produced.
If non-nil, the output of TeX compilation is shown in another window.
You can instruct TeX to print error messages in the form file:line:error which is similar to the way many compilers format them.
If non-nil, TeX will produce file:line:error style error messages.
ConTeXt users can choose between Mark II and Mark IV versions. This
is controlled by
This variables specifies which version of Mark should be used. Values
currently supported are
"II", the default, and
can be set globally using customization interface or on a per-file
basis, by specifying it as a file variable.
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