mirror of https://github.com/texmacs/doc.git
69 lines
2.4 KiB
Tcl
69 lines
2.4 KiB
Tcl
<TeXmacs|1.0.6.10>
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<style|tmdoc>
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<\body>
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<tmdoc-title|Miscellaneous features>
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Several other features are supported in order to write interfaces between
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<TeXmacs> and extern applications. Some of these are very hairy or quite
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specific. Let us briefly describe a few miscellaneous features:
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<paragraph*|Interrupts>
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The ``stop'' icon can be used in order to interrupt the evaluation of some
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input. When pressing this button, <TeXmacs> will just send a
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<verbatim|SIGINT> signal to your application. It expects your application
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to finish the output as usual. In particular, you should close all open
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<render-key|DATA_BEGIN>-blocks.
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<paragraph*|Testing whether the input is complete>
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Some systems start a multiline input mode as soon as you start to define a
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function or when you enter an opening bracket without a matching closing
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bracket. <TeXmacs> allows your application to implement a special predicate
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for testing whether the input is complete. First of all, this requires you
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to specify the configuration option
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<\scheme-fragment>
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(:test-input-done #t)
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</scheme-fragment>
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As soon as you will press <shortcut|(kbd-return)> in your input, <TeXmacs> will
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then send the command
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<\quotation>
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<\framed-fragment>
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<\verbatim>
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<render-key|DATA_COMMAND>(input-done? <em|input-string>)<shortcut|(kbd-return)>
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</verbatim>
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</framed-fragment>
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</quotation>
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Your application should reply with a message of the form
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<\quotation>
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<\framed-fragment>
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<verbatim|<render-key|DATA_BEGIN>scheme:<em|done><render-key|DATA_END>>
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</framed-fragment>
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</quotation>
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where <verbatim|<em|done>> is either <scm|#t> or <scm|#f>. The
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<verbatim|multiline> plug-in provides an example of this mechanism (see in
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particular the file <example-plugin-link|multiline/src/multiline.cpp>).
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<tmdoc-copyright|1998--2002|Joris van der Hoeven>
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<tmdoc-license|Permission is granted to copy, distribute and/or modify this
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document under the terms of the GNU Free Documentation License, Version 1.1
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or any later version published by the Free Software Foundation; with no
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Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
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Texts. A copy of the license is included in the section entitled "GNU Free
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Documentation License".>
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</body>
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<\initial>
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<\collection>
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<associate|language|english>
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</collection>
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</initial> |