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42 lines
976 B
Markdown
42 lines
976 B
Markdown
# Vim
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## Tl;DR
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```shell
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# Get help on something.
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:help modeline
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```
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## Modelines
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Set different options for a particular file.
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> The `modeline` option must be enabled in order to take advantage of this.
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> This option is **set** by default for Vim running in nocompatible mode, but some notable distributions of Vim disable it in the system's `vimrc` for security. In addition, the option is **off** by default when editing as `root`.
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See `:help modeline` for more information.
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The modeline line needs to:
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- be placed near the top of the file; how near, will depend on the modeline settings
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- start with a comment opening for the file type.
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> The space between the comment opening and 'vim' is necessary for the modeline to be recognized.
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Examples:
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```text
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# vim: set expandtab:
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# -*- mode: ruby -*-
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# vi: set ft=ruby :
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/* ex: set ts=8 sw=4 tw=0 noet : */
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```
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## Further readings
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- [Modeline magic]
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[modeline magic]: https://vim.fandom.com/wiki/Modeline_magic
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