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Edit Book: Fix a regression that caused syncing of the preview panel to the editor cursor position to not work when the cursor is positioned on a blank line in between two tag definitions

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This commit is contained in:
Kovid Goyal 2014-07-01 11:39:11 +05:30
parent 725e1b9a88
commit b4b4a6f179
1 changed files with 12 additions and 5 deletions
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15
src/calibre/gui2/tweak_book/editor/smart/html.py
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@ -353,16 +353,23 @@ class HTMLSmarts(NullSmarts):
block = cursor.block()
offset = cursor.position() - block.position()
nblock, boundary = next_tag_boundary(block, offset, forward=False)
if nblock is None:
if boundary is None:
return None, None
if boundary.is_start:
# We are inside a tag, use this tag
start_block, start_offset = nblock, boundary.offset
else:
tag = find_closest_containing_tag(block, offset)
if tag is None:
start_block = None
while start_block is None and block.isValid():
ud = block.userData()
if ud is not None:
for boundary in reversed(ud.tags):
if boundary.is_start and not boundary.closing and boundary.offset <= offset:
start_block, start_offset = block, boundary.offset
break
block, offset = block.previous(), sys.maxint
if start_block is None:
return None, None
start_block, start_offset = tag.start_block, tag.start_offset
sourceline = start_block.blockNumber() + 1 # blockNumber() is zero based
ud = start_block.userData()
if ud is None: