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MarkdownEditor: fix bug in finding current heading logics

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This commit is contained in:
Le Tan 2020-12-19 08:59:37 +08:00
parent 2369f6c4c8
commit e454ea6e61
1 changed files with 7 additions and 1 deletions
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8
src/widgets/editors/markdowneditor.cpp
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@ -785,7 +785,13 @@ int MarkdownEditor::getHeadingIndexByBlockNumber(int p_blockNumber) const
if (val == p_blockNumber) {
return mid;
} else if (val > p_blockNumber) {
// Skip the -1 headings.
// Bad case: [0, 2, 3, 43, 44, -1, 46, 60].
// If not skipped, [left, right] will be stuck at [4, 5].
right = mid - 1;
while (right >= left && m_headings[right].m_blockNumber == -1) {
--right;
}
} else {
left = mid;
}
@ -794,7 +800,7 @@ int MarkdownEditor::getHeadingIndexByBlockNumber(int p_blockNumber) const
if (m_headings[left].m_blockNumber <= p_blockNumber && m_headings[left].m_blockNumber != -1) {
return left;
}
// Find the last heading with block number not greater than @p_blockNumber.
return -1;
}