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Epsilon User's Manual and Reference

Commands by Topic

Changing Text

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Regular Expression Examples

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Regular Expression Commands

Rearranging

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Comparing By Lines

Transposing

Formatting Text

Indenting Commands

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Epsilon User's Manual and Reference > Commands by Topic > Changing Text > Rearranging >

Comparing By Lines

Use it when you have (for example) two lists of variable names, and you want to find out which variables appear on only one or the other list, and which appear on both. This command assumes that you sorted both the buffers. It copies all lines appearing in both buffers to a buffer named "inboth". It copies all lines that appear only in the first buffer to a buffer named "only1", and lines that appear only in the second to a buffer named "only2".

The uniq command goes through the current buffer and looks for adjacent identical lines, deleting the duplicate copies of each repeated line and leaving just one. It doesn't modify any lines that only occur once. This command behaves the same as the Unix command of the same name.

The keep-unique-lines command deletes all copies of any duplicated lines. This command acts like the Unix command "uniq -u".

The keep-duplicate-lines command deletes all lines that only occur once, and leaves one copy of each duplicated line. This command acts like the Unix command "uniq -d".

The following table shows how sample text would be modified by each of the above commands.

	Sample text	Uniq	Keep-duplicate-lines	Keep-unique-lines
	dog	dog	dog	cat
	dog	cat	horse	rabbit
	cat	horse		dog
	horse	rabbit
	horse	dog
	horse
	rabbit
	dog

Standard bindings:

			compare-sorted-windows
			uniq
			keep-unique-lines
			keep-duplicate-lines

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Epsilon Programmer's Editor 14.04 manual. Copyright (C) 1984, 2021 by Lugaru Software Ltd. All rights reserved.