[TxMt] Changing cursor position from command

[Allan Odgaard]

On 14. Feb 2007, at 20:19, Kevin Cox wrote:

> Whoops - that was a bit messed up. Here's the ACTUAL finished source
> (which escapes any '$'s other than the $0 it inserts. [...]

We have the e_sn function in lib/escape.rb, this is preferable  
because it will do the right thing (i.e. also handle escaping of `  
and \).

Here’s an alternative version using e_sn:

     #!/usr/bin/env ruby
     require "#{ENV['TM_SUPPORT_PATH']}/lib/escape.rb"

     line = STDIN.read

     if line =~ /\A.*;\Z/
       caret = ENV['TM_LINE_INDEX'].to_i
       print e_sn(line[0...caret]) + ';${0}' + e_sn(line[caret..-1])
     else
       print e_sn(line) + ';'
     end

I use ${0} instead of $0 incase there is a number to the right of the  
caret (the manual isn’t really clear on whether or not $01 is  
equivalent to $1 or ${0}1 -- so let’s just avoid ever having that in  
a snippet ;) ).