https://bugs.kde.org/show_bug.cgi?id=517910
Bug ID: 517910
Summary: Diff generated is not useful
Classification: Applications
Product: kdiff3
Version First 1.12.3
Reported In:
Platform: Homebrew (macOS)
OS: macOS
Status: REPORTED
Severity: major
Priority: NOR
Component: application
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 190857
--> https://bugs.kde.org/attachment.cgi?id=190857&action=edit
Files for diffing, plus result screenshots for Kdiff3 and Meld
SUMMARY
KDiff3 generates diffs that seem to get sidetracked by character-level
differences, while missing larger matching blocks. The resulting diffs are
hardly useful.
In contrast, other tools, like Meld, find much saner diffs.
STEPS TO REPRODUCE
1. kdiff3 1.txt 2.txt
OBSERVED RESULT
See included screenshot
EXPECTED RESULT
Something better. Compare to e.g. Meld's screenshot.
SOFTWARE/OS VERSIONS
KDiff3: 1.12.4 (64 bit) (NOTE THAT THE BUG FORM DOESN'T ALLOW FOR THIS VERSION)
KDE Frameworks: 6.23.0
Qt: Using 6.10.2 and built against 6.10.2
macOS Tahoe (26.3.1)
Build ABI: arm64-little_endian-lp64
Kernel: darwin 25.3.0
ADDITIONAL INFORMATION
I think this must be some relatively recent regression. I have been using
Kdiff3 for over a decade, and I don't think I would have lasted this long if
diffs were this bad?
Maybe I did something to the settings that caused this, but I have tried
changing them in different ways and nothing seems to help.
Related: if there was a way to change the diffing engine, as in 467059, maybe
this wouldn't be a big problem.
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