Re: [vile] help with macro

[Brendan O'Dea]

On 16 August 2014 11:50, Matthew White <address@hidden> wrote:
> I have written a macro to call "gofmt" (a program which formats Go source
> code)
>
> gofmt will either produce formatted code to stdout or print errors to
> stdout.

It appears to send errors to stderr.  In any case, I'd be inclined to
do this a bit more simply:

  store-procedure goformat
    goto-beginning-of-file
    filter-til end-of-file "gofmt"
  ~endm

If your program disappears, replaced with an error message: hit "u" :-)

The gofmt error format seems sufficiently unique, that you could
automate the undo step on error:

  store-procedure goformat
    goto-beginning-of-file
    filter-til end-of-file "gofmt"
    ~force search-forward "^<standard input>:.*"
    ~if $status
      undo-change
      write-message &cat "Error: " &right $match 18
    ~else
      clear-message-line  # "Not found" from search
    ~endif
  ~endm

Of course if you *really* wanted to get fancy, you could copy the
error output to "[Error buffer]" before the undo, replace "<standard
input>" with the filename, and invoke next-error to locate the cursor
on the problem line(s)...

--bod