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Full Discussion: Combining lines in one line
Top Forums UNIX for Beginners Questions & Answers Combining lines in one line Post 303015506 by MadeInGermany on Friday 6th of April 2018 03:33:35 AM
Old 04-06-2018
A \n an embedded newline character (not two consecutive characters \ and n).
sed loops over the lines in the input file, so the sed code only has one line in its "pattern space".
The \n character is only created after an append command like N or H or G or a.
Normally an RE can handle only one line, and ^ and $ mark the beginning and end of the line.
For example a line
Code:
line1

The RE can see
Code:
^line1$

After an append there is a \n between the two lines, like this
Code:
line1\nline2

An RE can see it like
Code:
^line1\nline2$


Last edited by MadeInGermany; 04-06-2018 at 04:41 AM..
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GIT-STRIPSPACE(1)                                                   Git Manual                                                   GIT-STRIPSPACE(1)

NAME
git-stripspace - Remove unnecessary whitespace SYNOPSIS
git stripspace [-s | --strip-comments] git stripspace [-c | --comment-lines] DESCRIPTION
Read text, such as commit messages, notes, tags and branch descriptions, from the standard input and clean it in the manner used by Git. With no arguments, this will: o remove trailing whitespace from all lines o collapse multiple consecutive empty lines into one empty line o remove empty lines from the beginning and end of the input o add a missing to the last line if necessary. In the case where the input consists entirely of whitespace characters, no output will be produced. NOTE: This is intended for cleaning metadata, prefer the --whitespace=fix mode of git-apply(1) for correcting whitespace of patches or files in the repository. OPTIONS
-s, --strip-comments Skip and remove all lines starting with comment character (default #). -c, --comment-lines Prepend comment character and blank to each line. Lines will automatically be terminated with a newline. On empty lines, only the comment character will be prepended. EXAMPLES
Given the following noisy input with $ indicating the end of a line: |A brief introduction $ | $ |$ |A new paragraph$ |# with a commented-out line $ |explaining lots of stuff.$ |$ |# An old paragraph, also commented-out. $ | $ |The end.$ | $ Use git stripspace with no arguments to obtain: |A brief introduction$ |$ |A new paragraph$ |# with a commented-out line$ |explaining lots of stuff.$ |$ |# An old paragraph, also commented-out.$ |$ |The end.$ Use git stripspace --strip-comments to obtain: |A brief introduction$ |$ |A new paragraph$ |explaining lots of stuff.$ |$ |The end.$ GIT
Part of the git(1) suite Git 2.17.1 10/05/2018 GIT-STRIPSPACE(1)
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