https://bugs.kde.org/show_bug.cgi?id=518035
Bug ID: 518035
Summary: [Kdevelop] Non-1-byte UTF-8 characters will cause
semantic token and highlight misalignment in UTF-8
file.
Classification: Applications
Product: kdevelop
Version First unspecified
Reported In:
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: All editors
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 190930
--> https://bugs.kde.org/attachment.cgi?id=190930&action=edit
example full program
SUMMARY
Non-1-byte UTF-8 characters will cause semantic token and highlight
misalignment in UTF-8 file.
STEPS TO REPRODUCE
1. Here is an example program, not only just C++ source files:
#include <iostream>
int main()
{
using namespace std;
int loooooooooooooooooooooog = 1;
// Every 1 byte utf8 character bring 0 misplaced
cout << "ASCII" << loooooooooooooooooooooog;
// Every 2 byte utf8 character bring 1 misplaced
cout << "Normalα" << loooooooooooooooooooooog;
// Every 3 byte utf8 character bring 2 misplaced
cout << "Normal中" << loooooooooooooooooooooog;
// Every 4 byte utf8 character bring 2 misplaced
cout << "Normal😄" << loooooooooooooooooooooog;
return 0;
}
OBSERVED RESULT
The begin hightlight position of the "looooooooooooooooog vars" (just for show
the misplaced issue) has been given by "^"
int loooooooooooooooooooooog = 1;
// Every 1 byte utf8 character bring 0 misplaced
cout << "ASCII" << loooooooooooooooooooooog;
^~~~~~~~~~~~~
// Every 2 byte utf8 character bring 1 misplaced
cout << "Normalα" << loooooooooooooooooooooog;
^~~~~~~~~~~~~~~
// Every 3 byte utf8 character bring 2 misplaced
cout << "Normal中" << loooooooooooooooooooooog;
^~~~~~~~~~~~~~~~~~~~
// Every 4 byte utf8 character bring 2 misplaced
cout << "Normal😄" << loooooooooooooooooooooog;
^~~~~~~~~~~~~~~~~~~
EXPECTED RESULT
It should performs like that:
int loooooooooooooooooooooog = 1;
cout << "ASCII" << loooooooooooooooooooooog;
^~~~~~~~~~~~~
cout << "Normalα" << loooooooooooooooooooooog;
^~~~~~~~~~~~~~~
cout << "Normal中" << loooooooooooooooooooooog;
^~~~~~~~~~~~~~~~~~~~
cout << "Normal😄" << loooooooooooooooooooooog;
^~~~~~~~~~~~~~~~~~~
SOFTWARE/OS VERSIONS
Linux/KDE Plasma:
KDE Plasma Version: 6.6.3
KDE Frameworks Version: 6.24.0
Qt Version: 6.10.2
ADDITIONAL INFORMATION
The issue exists in every utf8 files witch has more than 1 byte character and
kdevelop will misplaced the follow characters' highlight and semantic token. I
know that Qtstring uses UTF-16 to encode and I guess
"kdevelop/kdevplatform/language/duchain/" module transmit the position to front
Qt, but there exists some coding conversion issue leading to the misplace.
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