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Revert revision 14819 and my faulty fix for it.

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* src/mathed/InsetMathScript.C
	(InsetMathScript::write): Do not add braces to the nucleus

	* src/mathed/MathParser.C
	(Parser::parse1): Do not remove brace insets from the nucleus of
	script insets

	* src/mathed/InsetMathNest.C
	(InsetMathNest::script): ditto


git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@15859 a592a061-630c-0410-9148-cb99ea01b6c8
This commit is contained in:
Georg Baum 2006-11-11 15:26:31 +00:00
parent 04157d9cb8
commit 8c651169ef
3 changed files with 13 additions and 18 deletions
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6
src/mathed/InsetMathNest.C
View File

@ -1403,11 +1403,7 @@ bool InsetMathNest::script(LCursor & cur, bool up,
}
--cur.pos();
InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
// special handling of {}-bases
// is this always correct?
if (inset->nuc().size() == 1
&& inset->nuc().back()->asBraceInset())
inset->nuc() = inset->nuc().back()->asNestInset()->cell(0);
// See comment in MathParser.C for special handling of {}-bases
cur.push(*inset);
cur.idx() = 1;

6
src/mathed/InsetMathScript.C
View File

@ -421,11 +421,7 @@ bool InsetMathScript::idxUpDown(LCursor & cur, bool up) const
void InsetMathScript::write(WriteStream & os) const
{
if (nuc().size()) {
if (nuc().size() == 1
&& ! nuc().begin()->nucleus()->asScriptInset())
os << nuc();
else
os << '{' << nuc() << '}';
os << nuc();
//if (nuc().back()->takesLimits()) {
if (limits_ == -1)
os << "\\nolimits ";

19
src/mathed/MathParser.C
View File

@ -827,14 +827,17 @@ void Parser::parse1(InsetMathGrid & grid, unsigned flags,
cell->back() = MathAtom(new InsetMathScript(cell->back(), up));
InsetMathScript * p = cell->back().nucleus()->asScriptInset();
// special handling of {}-bases
// Test for empty brace inset, otherwise \xxx{\vec{H}}_{0}
// where \xxx is an unknown command gets misparsed to
// \xxx\vec{H}_{0}, and that is invalid LaTeX.
// is this always correct?
if (p->nuc().size() == 1 &&
p->nuc().back()->asBraceInset() &&
p->nuc().back()->asBraceInset()->cell(0).empty())
p->nuc() = p->nuc().back()->asNestInset()->cell(0);
// Here we could remove the brace inset for things
// like {a'}^2 and add the braces back in
// InsetMathScript::write().
// We do not do it, since it is not possible to detect
// reliably whether the braces are needed because the
// nucleus contains more than one symbol, or whether
// they are needed for unknown commands like \xx{a}_0
// or \yy{a}{b}_0. This was done in revision 14819
// in an unreliable way. See this thread
// http://www.mail-archive.com/lyx-devel%40lists.lyx.org/msg104917.html
// for more details.
parse(p->cell(p->idxOfScript(up)), FLAG_ITEM, mode);
if (limits) {
p->limits(limits);