So, I made a Q&D benchmark of #BBEdit vs #Kate on macOS, opening and manipulating a huge text file : 915MB, +14M lines, some lines longer than 150K characters.
Kate opens the file faster, but everything else is slower. Kate also has a tunable limit of line length (default to 10K), documents with lines longer than that limit are opened read-only, unless you choose to override the limit when prompted to.
Also, above a given file size, Kate seems to disable some features, probably to preserve performance.
BBEdit has super great text manipulation features, designed with the user in mind (nice GUI to tune a line sorting operation, a complex line extraction, dupe removal, etc.).
Most of these features are non-existant in Kate. But one can achieve very similar results with the great «Filter Through Command…» menu. Just enter your usual grep/awk/tr/sed/sort/whatever command and get the result.




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