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Assure not to miss requirements on loading with instant preview on

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This commit is contained in:
Enrico Forestieri 2015-06-25 00:49:15 +02:00
parent f3b03699ef
commit fee356eb56
1 changed files with 13 additions and 0 deletions
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13
src/mathed/MathMacro.cpp
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@ -723,8 +723,21 @@ size_t MathMacro::appetite() const
void MathMacro::validate(LaTeXFeatures & features) const
{
// Immediately after a document is loaded, in some cases the MacroData
// of the global macros defined in the lib/symbols file may still not
// be known to the macro machinery because it will be set only after
// the first call to updateMacros(). This is not a problem unless
// instant preview is on for math, in which case we will be missing
// the corresponding requirements.
// In this case, we get the required info from the global macro table.
if (!d->requires_.empty())
features.require(d->requires_);
else if (!d->macro_) {
// Update requires for known global macros.
MacroData const * data = MacroTable::globalMacros().get(name());
if (data && !data->requires().empty())
features.require(data->requires());
}
if (name() == "binom")
features.require("binom");