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S/Sed/Ed
ed is a stupid simple text editor. sed is a nice streaming text processing tool. Why would one even want to use ed for anything, let alone for text processing if there's sed?
This post starts with holding a grudge: Posix regular expressions are extremely hard to get wrong? One can overwrite files, re-read them, run shell commands, move lines around, and undo anything. y command for transcription My ed script for Armenian transliteration is 30 lines longer than respective sed one.
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