exec: add option exec.command.shell to customize the shell used with /exec -sh

src/plugins/exec/exec-command.c

@@ -405,7 +405,8 @@ int
 exec_command_run (struct t_gui_buffer *buffer,
                   int argc, char **argv, char **argv_eol, int start_arg)
 {
-    char str_buffer[512];
+    char str_buffer[512], *default_shell = "sh";
+    const char *ptr_shell;
     struct t_exec_cmd *new_exec_cmd;
     struct t_exec_cmd_options cmd_options;
     struct t_hashtable *process_options;
@@ -480,6 +481,19 @@ exec_command_run (struct t_gui_buffer *buffer,
     /* automatically disable shell if we are downloading an URL */
     if (strncmp (argv_eol[cmd_options.command_index], "url:", 4) == 0)
         cmd_options.use_shell = 0;
+
+    /* get default shell */
+    if (cmd_options.use_shell)
+    {
+        ptr_shell = weechat_config_string (exec_config_command_shell);
+        if (!ptr_shell || !ptr_shell[0])
+            ptr_shell = default_shell;
+    }
+    else
+    {
+        ptr_shell = NULL;
+    }
+
     if (cmd_options.use_shell)
     {
         /* command will be: sh -c "command arguments..." */
@@ -574,14 +588,15 @@ exec_command_run (struct t_gui_buffer *buffer,
     /* execute the command */
     if (weechat_exec_plugin->debug >= 1)
     {
-        weechat_printf (NULL, "%s: executing command: \"%s%s%s\"",
+        weechat_printf (NULL, "%s: executing command: \"%s%s%s%s\"",
                         EXEC_PLUGIN_NAME,
-                        (cmd_options.use_shell) ? "sh -c '" : "",
+                        (cmd_options.use_shell) ? ptr_shell : "",
+                        (cmd_options.use_shell) ? " -c '" : "",
                         argv_eol[cmd_options.command_index],
                         (cmd_options.use_shell) ? "'" : "");
     }
     new_exec_cmd->hook = weechat_hook_process_hashtable (
-        (cmd_options.use_shell) ? "sh" : argv_eol[cmd_options.command_index],
+        (cmd_options.use_shell) ? ptr_shell : argv_eol[cmd_options.command_index],
         process_options,
         cmd_options.timeout * 1000,
         &exec_process_cb,

src/plugins/exec/exec-config.c

@@ -34,6 +34,7 @@ struct t_config_file *exec_config_file = NULL;
 
 struct t_config_option *exec_config_command_default_options;
 struct t_config_option *exec_config_command_purge_delay;
+struct t_config_option *exec_config_command_shell;
 
 /* exec config, color section */
 
@@ -130,6 +131,16 @@ exec_config_init ()
            "commands immediately, -1 = never purge)"),
         NULL, -1, 36000 * 24 * 30, "0", NULL, 0,
         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL);
+    exec_config_command_shell = weechat_config_new_option (
+        exec_config_file, ptr_section,
+        "shell", "string",
+        N_("shell to use with command \"/exec -sh\"; it can be just the name "
+           "of shell if it is in PATH (for example \"bash\") or the absolute "
+           "path to the shell (for example \"/bin/bash\")"),
+        NULL, 0, 0, "sh", NULL, 0,
+        NULL, NULL, NULL,
+        NULL, NULL, NULL,
+        NULL, NULL, NULL);
 
     /* color */
     ptr_section = weechat_config_new_section (exec_config_file, "color",

src/plugins/exec/exec-config.h

@@ -26,6 +26,7 @@ extern struct t_config_file *exec_config_file;
 
 extern struct t_config_option *exec_config_command_default_options;
 extern struct t_config_option *exec_config_command_purge_delay;
+extern struct t_config_option *exec_config_command_shell;
 
 extern struct t_config_option *exec_config_color_flag_running;
 extern struct t_config_option *exec_config_color_flag_finished;