sfeed_curses.c: if a command (argv[0]) is empty do not try to execute - sfeed - RSS and Atom parser
  HTML git clone git://git.codemadness.org/sfeed
   DIR Log
   DIR Files
   DIR Refs
   DIR README
   DIR LICENSE
       ---
   DIR commit ad02e2b4169d0a7b2ce4d209dbe4c2deca4bd7d8
   DIR parent ba641e578512569d70f74c9b1b309d3247ea0d14
  HTML Author: Hiltjo Posthuma <hiltjo@codemadness.org>
       Date:   Sat, 21 Feb 2026 12:17:01 +0100
       
       sfeed_curses.c: if a command (argv[0]) is empty do not try to execute
       
       Also in the documentation reword the part for a valid being "unset" and
       "empty".
       
       Diffstat:
         M sfeed_content.1                     |       6 +++---
         M sfeed_curses.c                      |       9 +++++++++
       
       2 files changed, 12 insertions(+), 3 deletions(-)
       ---
   DIR diff --git a/sfeed_content.1 b/sfeed_content.1
       @@ -1,4 +1,4 @@
       -.Dd October 27, 2024
       +.Dd February 7, 2026
        .Dt SFEED_CONTENT 1
        .Os
        .Sh NAME
       @@ -27,10 +27,10 @@ to view content.
        .Bl -tag -width Ds
        .It Ev PAGER
        The pager used to view the content.
       -If it is not set it will use "less -R" by default.
       +If it is not set or empty it will use "less -R" by default.
        .It Ev SFEED_HTMLCONV
        The program used to convert HTML content to plain-text.
       -If it is not set it will use lynx by default.
       +If it is not set or empty it will use lynx by default.
        .El
        .Sh EXIT STATUS
        .Ex -std
   DIR diff --git a/sfeed_curses.c b/sfeed_curses.c
       @@ -570,6 +570,9 @@ pipeitem(const char *cmd, struct item *item, int field, int interactive)
                pid_t pid;
                int i, status;
        
       +        if (!cmd || !cmd[0])
       +                return;
       +
                if (interactive)
                        cleanup();
        
       @@ -608,6 +611,9 @@ forkexec(char *argv[], int interactive)
        {
                pid_t pid;
        
       +        if (!argv[0] || !argv[0][0])
       +                return;
       +
                if (interactive)
                        cleanup();
        
       @@ -1817,6 +1823,9 @@ markread(struct pane *p, off_t from, off_t to, int isread)
        
                cmd = isread ? markreadcmd : markunreadcmd;
        
       +        if (!cmd || !cmd[0])
       +                return;
       +
                switch ((pid = fork())) {
                case -1:
                        die("fork");