builder-flatpak-utils: Normalize the single trailing slash in pattern

[bbhtt]

Fixes #476

[bbhtt]

any comments on this?

[swick]

This handles the inverse. Could add something like

case '/':
  if (*string == '/')
    string++;
  else if (*string != 0)
    return NULL;
  break;

[bbhtt]

that does not work directly

[bbhtt]

i had to do this, but this copies case 0 again.

case '/':
  if (*pattern == 0)
    {
      /* treat as directory boundary, don't consume */
      if (*string == '/' || *string == 0)
        return string;
      return NULL;
    }
  if (*string == '/')
    string++;
  else if (*string != 0)
    return NULL;
  break;

[swick]

Not sure if I would consider this a bug in the first place. Kind of depends on what you consider a path prefix I guess.

[bbhtt]

according to the man, patterns are taken to be either the full pathname or basename, not normalising is a bit weird. it also accepts /*. the patterns are also path-like syntactically.