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Re: How to open a file in sh-mode
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From: |
David Combs |
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Subject: |
Re: How to open a file in sh-mode |
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Date: |
Thu, 11 Sep 2008 01:35:55 +0000 (UTC) |
In article <64d8ebaf-0c89-4e9d-9aee-86b4e9414449@o40g2000prn.googlegroups.com>,
Xah <xahlee@gmail.com> wrote:
>On Aug 14, 12:53 am, "Francis Moreau" <francis.m...@gmail.com> wrote:
>> Hello,
>>
>> I'm trying to open a file with emacs automatically set on sh-mode.
>> The file name can't be used to guess that emacs should be in sh-mode
>> when opening it.
>
>If the file content's first line starts with â#!â, then you could use
>the magic-mode-alist.
>
Xah -- question about the characters in your posts:
If I or someone sees eg a url in one of your posts, and
wants to go to that url (because you've suggested doing that,
maybe), it's a little difficult to just cut-n-paste your string,
what with all the extra control or whatever they are characters
mixed in.
What is that stuff, why is it there, and is it really necessary
for you to include it.
Thanks,
David
>-----------------------------------
>How Emacs Choose Modes
>
>Emacs determines what mode to use primarily by 2 mechanisms, in order:
>(1) Check the first line in the file, using âmagic-mode-alistâ. (2)
>Check the file name's suffix, using âauto-mode-alistâ.
>
>The âmagic-mode-alistâ is a list that emacs use to match the first
>line of a file with a mode. For example, if you want files that begin
>with the line â<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 ...â to
>always use nxml-mode, then add the following to your â.emacsâ:
>
>(add-to-list
> 'magic-mode-alist
> '("<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0" . nxml-mode))
>
>The magic-mode-alist is a list. In the above example, the string with
>the âDOCTYPEâ is a regex, used to match the first line of a file.
>
>If emacs goes thru magic-mode-alist and didn't find any match, then
>it'll use auto-mode-alist to check on file name suffix. The âauto-mode-
>alistâ associates a file name suffix with a mode. For example, if you
>want files ending in â.jsâ to always open with js2-mode, then do:
>
>(add-to-list 'auto-mode-alist '("\\.js\\'" . js2-mode))
>
>Note: The double backslash in the string â\\.js\\'â is used to escape
>the backslash. So, the regex engine just got â\.js\'â. The â\.â is to
>match a period. The â\'â is one of emacs special regex syntax, to
>match end of a string. (See also: Text Pattern Matching in Emacs)
>
>Reference: Elisp Manual: Regexp-Backslash.
>
>You can see what are the values of magic-mode-alist or auto-mode-alist
>by typing âAlt+x describe-variableâ.
>
>There are few minor details about how emacs determines what mode to
>load, but the above should cover vast majority of needs. For detail,
>see emacs manual.
>
>Reference: (info "(emacs)Choosing Modes").
>
>--------------------------------------------
>above from:
>http://xahlee.org/emacs/emacs_installing_packages.html
>
> Xah
>â http://xahlee.org/
>
>â
- Re: How to open a file in sh-mode,
David Combs <=