Re: Using "Filtered View" gives error "Cannot create pipe streams"

[Ben Woods <woodsb02 gmail com>]

Never mind, I have found the reason for the error. The Filtered View command does not currently use the PATH environment variable to find the executable provided.

I have submitted a pull request for this: https://github.com/MidnightCommander/mc/pull/59

Is someone able to have a look for me?

To replicate the problem:
1. In mc, open the "File" menu and select "Filtered View"
2. In the displayed Filtered View command and arguments field, type "grep PATTERN FILENAME"

Expected result: display output of grep command in mcview
Actual result: Error is displayed "Cannot create pipe streams"

Reason: The grep command is not in the current directory, and the PATH environment variable is not used to search for the executable.

Regards,

Ben

On Sun, Apr 12, 2015 at 2:18 AM Ben Woods <woodsb02 gmail com> wrote:

Hi,

I am maintaining the midnight commander port for FreeBSD, and I am seeing an error with v4.8.14.

When I use the "Filtered View" option from the File menu, and enter any filter (e.g. "*.c"), it gives me an error message "Cannot create pipe streams".

This error appears to be from the function mc_popen in file lib/utilunix.c (excerpt below). Any ideas how I can troubleshoot this further?

Thanks in advance,

Ben

/**

 * Create pipe and run child process.

 *

 * @parameter command command line of child process

 * @paremeter error contains pointer to object to handle error code and message

 *

 * @return newly created object of mc_pipe_t class in success, NULL otherwise

 */

mc_pipe_t *

mc_popen (const char *command, GError ** error)

{

    mc_pipe_t *p;

    char **argv;

    p = g_try_new (mc_pipe_t, 1);

    if (p == NULL)

    {

        mc_replace_error (error, MC_PIPE_ERROR_CREATE_PIPE, "%s",

                          _("Cannot create pipe descriptor"));

        goto ret_err;

    }

    if (!g_shell_parse_argv (command, NULL, &argv, error))

    {

        mc_replace_error (error, MC_PIPE_ERROR_PARSE_COMMAND, "%s",

                          _("Cannot parse command for pipe"));

        goto ret_err;

    }

    if (!g_spawn_async_with_pipes (NULL, argv, NULL, G_SPAWN_DO_NOT_REAP_CHILD, NULL, NULL,

                                   &p->child_pid, NULL, &p->out.fd, &p->err.fd, error))

    {

        mc_replace_error (error, MC_PIPE_ERROR_CREATE_PIPE_STREAM, "%s",

                          _("Cannot create pipe streams"));

        goto ret_err;

    }

...