CTAN Update: chemfig

CTAN Announcements ctan-ann at ctan.org
Fri Mar 9 20:56:26 CET 2018

Christian Tellechea submitted an update to the



Version:  1.3  2018-03-08
License:  lppl1.3c

Summary description:  Draw molecules with easy syntax

Announcement text:

 chemfig 1.3

  * All parameters are now set via \setchemfig{} with <key>=<value> syntax.
    The following macros, though still working, are now obsolete:
    \setcrambond, \setatomsep, \setbondoffset, \setdoublesep,
    \setangleincrement, \enablefixedbondlength, \disablefixedbondlength,
    \setnodestyle, \setbondstyle, \setlewis, \setlewisdist, \setstacksep,
    \setcompoundstyle, \setarrowdefault, \setandsign, \setarrowoffset,
    \setcompoundsep, \setarrowlabelsep, \enablebondjoin, \disablebondjoin
    and \schemedebug

  * The starred version "\chemfig*" and the optionnals arguments "\chemfig[][]",
    though still, working are obsolete.
    The \setchemfig macro should be used instead.

  * 6 new parameters: "lewis radius", "arrow double sep", "arrow double coeff",
    "arrow double harpoon", "cycle radius coeff", "arrow head", all set via

  * Bugfix in \CF at parse@mergeopt

  * Code cleaning.

  * Macro \polymerdelim (undocumented), included in the code:
    this macro is exprimental and still in test.

  * No write register allocated by \newwrite


The package’s Catalogue entry can be viewed at

The package’s files themselves can be inspected at


   Thanks for the upload.

     For the CTAN Team
    Petra Rübe-Pugliese


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