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Fix endless loop when breaking text

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For some reason, Qt can break strings before the first character
(although we try to prevent that). The code was not prepared to that,
now it is.

Remove a forgotten debug statement.
This commit is contained in:
Jean-Marc Lasgouttes 2021-12-09 16:43:16 +01:00
parent b461d07b5b
commit dcef1a9cad
1 changed files with 6 additions and 1 deletions
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7
src/Row.cpp
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@ -162,6 +162,12 @@ bool Row::Element::splitAt(int const width, int next_width, bool force,
bool first = true;
docstring::size_type i = 0;
for (FontMetrics::Break const & brk : breaks) {
/* For some reason breakString can decide to break before the
* first character (normally we use a 0-width nbsp to prevent
* that). Skip leading empty elements, they are never wanted.
*/
if (first && brk.len == 0 && breaks.size() > 1)
continue;
Element e(STRING, pos + i, font, change);
e.str = str.substr(i, brk.len);
e.endpos = e.pos + brk.len;
@ -612,7 +618,6 @@ Row::Elements Row::shortenIfNeeded(int const w, int const next_width)
* splitting this time.
*/
if (cit->splitAt(w - wid, next_width, true, tail)) {
LYXERR0(*cit);
end_ = cit->endpos;
dim_.wid = wid + cit->dim.wid;
// If there are other elements, they should be removed.