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Fix bug #11595

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Avoid an endless loop when in the definition of a macro the macro
itself is used in the LyX representation part.

(cherry picked from commit 1cb2a443b5)
This commit is contained in:
Enrico Forestieri 2019-06-09 22:35:05 +02:00
parent 2729589b4f
commit 11fd6fe43d
2 changed files with 12 additions and 7 deletions
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17
src/mathed/InsetMathMacro.cpp
View File

@ -661,17 +661,20 @@ void InsetMathMacro::updateRepresentation(Cursor * cur, MacroContext const & mc,
values[i].insert(0, MathAtom(proxy));
}
// expanding macro with the values
// Only update the argument macros if anything was expanded, otherwise
// we would get an endless loop (bug 9140). UpdateLocker does not work
// in this case, since MacroData::expand() creates new InsetMathMacro
// objects, so this would be a different recursion path than the one
// protected by UpdateLocker.
if (d->macro_->expand(values, d->expanded_)) {
// Only update the argument macros if anything was expanded or the LyX
// representation part does not contain the macro itself, otherwise we
// would get an endless loop (bugs 9140 and 11595). UpdateLocker does
// not work in this case, since MacroData::expand() creates new
// InsetMathMacro objects, so this would be a different recursion path
// than the one protected by UpdateLocker.
docstring const & display = d->macro_->display();
docstring const latexname = from_ascii("\\") + macroName();
if (d->macro_->expand(values, d->expanded_)
&& !support::contains(display, latexname)) {
if (utype == OutputUpdate && !d->expanded_.empty())
d->expanded_.updateMacros(cur, mc, utype, nesting);
}
// get definition for list edit mode
docstring const & display = d->macro_->display();
asArray(display.empty() ? d->macro_->definition() : display,
d->definition_, Parse::QUIET | Parse::MACRODEF);
}

2
status.23x
View File

@ -54,6 +54,8 @@ What's new
- Deal properly with orphaned bibitems (bug 7160).
- Fix endless loop when a macro definition references itself (bug 11595).
* INTERNALS