When testing for SRU verification, please could you also test round-
tripping some other strings through setPlainText and toPlainText? For
example, combinations of empty, one and more -length strings that
contain ASCII, 16-bit code points and code points that require surrogate
pairs?
** Description changed:
# Test Case
$ python3
>>> from PyQt5.QtGui import QTextDocument
>>> d = QTextDocument()
>>> d.setPlainText('÷ Σ')
>>> d.toPlainText()
'÷ £'
This should not happen. d.toPlainText() should return '÷ Σ'.
# Impact
The bug was initially reported upstream:
https://www.riverbankcomputing.com/pipermail/pyqt/2015-March/035627.html.
Some time ago I got the same issue in ReText CI, which uses Ubuntu
Trusty. The test failure was observed at https://travis-ci.org/retext-
project/retext/builds/186945524. With the proposed upload, the failure
disappears.
This can also affect other editors which allow to input unicode, like
eric.
# Proposed Fix
The fix which I am uploading to -proposed is taken from this upstream
changeset:
2014-04-15 Phil Thompson <[email protected]>
- * qpy/QtCore/qpycore_qstring.cpp:
- Fixed a bug in the conversion of QStrings with surrogate pairs.
- [16a9c19d08cf] <5.2-maint>
+ * qpy/QtCore/qpycore_qstring.cpp:
+ Fixed a bug in the conversion of QStrings with surrogate pairs.
+ [16a9c19d08cf] <5.2-maint>
It is present in all releases since v5.3.
# Regression Potential
- The patch is small, should not introduce any regressions.
+ The patch is small, should not introduce any regressions. If there is a
regression, it is likely to be in the area that converts QStrings to Python
Unicode objects, with the edge cases being different length strings between
ASCII, 16-bit code points and code points that require surrogate pairs.
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https://bugs.launchpad.net/bugs/1654840
Title:
Error in conversion of some characters from QString to Python unicode
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