-sh: use the shell to execute the command (default)
-nosh: do not use the shell to execute the command (required if the command has some unsafe data, for example the content of a message from another user)
-bg: run process in background: do not display process output neither return code (not compatible with options -o/-n)
-nobg: catch process output and display return code (default)
-stdin: create a pipe for sending data to the process (with /exec -in/-inclose)
-nostdin: do not create a pipe for stdin (default)
-buffer: display/send output of command on this buffer (if the buffer is not found, a new buffer with name "exec.exec.xxx" is created)
-l: display locally output of command on buffer (default)
-o: send output of command to the buffer (not compatible with option -bg)
-n: display output of command in a new buffer (not compatible with option -bg)
-sw: switch to the output buffer (default)
-nosw: don't switch to the output buffer
-ln: display line numbers (default in new buffer only)
-noln: don't display line numbers
-color: action on ANSI colors in output:
ansi: keep ANSI codes as-is
decode: convert ANSI colors to WeeChat/IRC (default)
strip: remove ANSI colors
-rc: display return code (default)
-norc: don't display return code
-timeout: set a timeout for the command (in seconds)
-name: set a name for the command (to name it later with /exec)
command: the command to execute; if beginning with "url:", the shell is disabled and the content of URL is downloaded and sent as output
id: command identifier: either its number or name (if set with "-name xxx")