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What happens if I add a new line at the end of a file?
If a file ends without a newline character, then adding anything to the end of the file will be viewed by diff utilities as changing that last line (because \ is being added to it). This could cause unwanted results with commands such as git blame and hg annotate.
Why do newlines get replaced with spaces in Echo?
The newlines are replaced with spaces because that’s how echo works – it concatenates its arguments on spaces. echo replaces argument delimiters with a space. In truth, you can iterate with for over anything you want, but you have to specify the field delimiter first:
When to use a newline in GNU diff?
With GNU diff, if one of the files being compared ends with a newline but not the other, it is careful to note that fact. Since diff is line-oriented, it can’t indicate this by storing a newline for one of the files but not for the others — the newlines are necessary to indicate where each line in the diff file starts and ends.
Is the while loop executed in a subshell?
Here’s a complete test program: The while loop is executed in a subshell. So any changes you do to the variable will not be available once the subshell exits. Instead you can use a here string to re-write the while loop to be in the main shell process; only echo -e $lines will run in a subshell:
Is there a c file that does not end with a newline?
There are/were some C compilers that cannot parse the last line if it does not end with a newline. The C standard specifies that a C file should end with a newline (C11, 5.1.1.2, 2.) and that a last line without a newline yields undefined behavior (C11, J.2, 2nd item).
How to insert new line at the end of files in Visual Studio Code?
Visual Studio Code will now add an empty line to the end of files when being saved, if there isn’t already one. I have placed a screen capture below showing how to make Visual Studio Code insert a newline at the end of files.
What’s the point in adding a new line to the diff file?
Since diff is line-oriented, it can’t indicate this by storing a newline for one of the files but not for the others — the newlines are necessary to indicate where each line in the diff file starts and ends. So diff uses this special text No newline at end of file to differentiate a file that didn’t end in a newline from a file that did.