To set the filetype to xml
for a file file.xml
, append
<!-- vim:filetype=xml -->
to file.xml
. With modeline
set, :edit file.xml
gives the error message
E518: Unknown option: -->
Vim should infer by the commentstring option that
commentstring=<!--%s-->
and therefore that -->
is the closing comment marker, and not a modeline setting.
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Well:
Vim should infer by the commentstring option that
:h commentstring
Currently only used to add markers for folding, see |fold-marker|.
Therefore no, it doesn't.
And :h modeline
There are two forms of modelines. The first form:
[text]{white}{vi:|vim:|ex:}[white]{options}
(...)
Examples:
vi:noai:sw=3 ts=6 ~
vim: tw=77 ~
The second form (this is compatible with some versions of Vi):
[text]{white}{vi:|vim:|Vim:|ex:}[white]se[t] {options}:[text]
(...)
Examples:
/* vim: set ai tw=75: */ ~
/* Vim: set ai tw=75: */
And you have two options, either
<!-- vim: ft=xml
-->
And
<!-- vi: set ft=xml: -->
Which is more compatible anyway.
Also, this probably should be in vim_users
mailing list or vi.stackexhange.com
. Not an issue on github (and be closed here).
The 'commentstring' option can only be set after detecting the filetype, thus it can't be used for the modeline.
Closed #1648.
For example, the markdown comment [//]: # ( vim: spell:spelllang=en: )
still produces the error message:
Error detected while processing modelines: line 309: E518: Unknown option: )
I am sorry, the set
makes the difference. I thought it was about the trailing :
. It's fine.