\$ followed by a number doesn't get escaped properly

[BojanStipic]

For example, I have the following snippet for GAS:

'.source.asm.x86_64':
  'Input':
    'prefix': 'in'
    'body': """
        movl \$3, %eax
        movl \$0, %ebx
        leal ${1:string}, %ecx
        movl ${2:size}, %edx
        int \$0x80
    """

Expected behavior: dollar sign gets escaped and it generates:

movl $3, %eax
movl $0, %ebx
leal string, %ecx
movl size, %edx
int $0x80

Instead, \$3 and \$0 creates a new tab stop.

[50Wliu]

@BojanStipic Can you try two backslashes? Eg \\$3.

[BojanStipic]

@50Wliu It does work correctly with two backslashes, but I am now curious why would I need two backslashes? I can't find documentation where that is stated.

[50Wliu]

@BojanStipic CSON escapes the first backslash before passing it to the snippet parser, which then escapes the second backslash, which is why you need two. In fact, in order to actually display a backslash, you need to quadruple-escape it: \\\\ :P.