Re: Auto-detect Guile in a text editor

[Barry Fishman]

On 2018-10-23 13:07:33 +02, HiPhish wrote:
> Hello Schemers
>
> When I open a Scheme file (Neo)vim the file type is set to "scheme", but I 
> would like to be able to detect that it is not just Scheme, but Guile Scheme. 
> So far I have set up the editor to scan the first line for a shebang and if 
> the word "guile" appears to set the file type to "scheme.guile":
>
>       if getline(1) =~? '\v^#!.*[Gg]uile'
>               let &filetype .= '.guile'
>       endif
>
> If you are not familiar with Vim, the important part is the regex 
> '^#!.*[Gg]uile'. This works OK, but is there a better way than adding a 
> shebang or some other manual hing to the head of every script? How does Emacs 
> do it?

Vim like Emacs recognizes modelines in the file.  I start guile scripts
with:

#! /bin/sh
## -*- mode: scheme; coding: utf-8 -*-
## Time-stamp: <2018-09-14 08:43:42 barry>
exec ${GUILE:-guile} -e main -s $0 ${1+"$@"}
!#

--
Barry Fishman