About: Newlines and nulls in Vim script

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About: Newlines and nulls in Vim script Sponge Permalink

An Entity of Type : owl:Thing, within Data Space : 134.155.108.49:8890 associated with source dataset(s)

When is stored in a Vim variable/register/etc, it is stored as a NULL, and then translated back to a real newline under circumstances such as "put". Try inserting a newline in insert mode, i.e. ^V^J (or ^Q^J if you're using the mswin behavior). You will see a <00> show up. Now try these to help understand further: let @a = "a" . " " . "b" or let @a = "a" . "\x0a" . "b" and put it into the buffer using "ap or :put a You should see: a b "put" is especially smart about translating the newlines from NULLs back to 0x0a. Now do: call setline(".", @a) or call append("$", @a) You should see:

Attributes	Values
rdfs:label	Newlines and nulls in Vim script
rdfs:comment	When is stored in a Vim variable/register/etc, it is stored as a NULL, and then translated back to a real newline under circumstances such as "put". Try inserting a newline in insert mode, i.e. ^V^J (or ^Q^J if you're using the mswin behavior). You will see a <00> show up. Now try these to help understand further: let @a = "a" . " " . "b" or let @a = "a" . "\x0a" . "b" and put it into the buffer using "ap or :put a You should see: a b "put" is especially smart about translating the newlines from NULLs back to 0x0a. Now do: call setline(".", @a) or call append("$", @a) You should see:
Version	5(xsd:double)
dcterms:subject	VimL
dbkwik:vim/property/wikiPageUsesTemplate	dbkwik:resource/1UkzPUuF-PpuM0-NgABghA== dbkwik:resource/DSqHV0Kw5d1d-hQlD2avAw==
Previous	1265(xsd:integer)
Author	Eric Arnold
Complexity	intermediate
Created	2006(xsd:integer)
ID	1266(xsd:integer)
NEXT	1267(xsd:integer)
Rating	21(xsd:integer)
abstract	When is stored in a Vim variable/register/etc, it is stored as a NULL, and then translated back to a real newline under circumstances such as "put". Try inserting a newline in insert mode, i.e. ^V^J (or ^Q^J if you're using the mswin behavior). You will see a <00> show up. Now try these to help understand further: let @a = "a" . " " . "b" or let @a = "a" . "\x0a" . "b" and put it into the buffer using "ap or :put a You should see: a b "put" is especially smart about translating the newlines from NULLs back to 0x0a. Now do: call setline(".", @a) or call append("$", @a) You should see: a<00>b It's not a happy reality, since NULLs and newlines cannot cooexist in Vim script strings in various circumstances. In Vim 7 you have the option of giving a list to setline() and append(), which solves the line break ambiguity: call setline(".", [ 'a', 'b' ] ) I'm now using lists everywhere I can, in preference to concatenated strings with newline separators. I usually split() any such strings I find into a list for easier manipulation. This sidesteps all the usual pitfalls trying to handle line breaks manually as embedded characters.

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