Config file values are truncated after first space.

[jdwhite]

This issue is present in 1.6.12 and 2.0.6.

In the OPTIONS section of the man pages for mosquitto_{pub,sub}, the first sentence reads:

The options below may be given on the command line, but may also be placed in a config file located at $XDG_CONFIG_HOME/[mosquitto_pub/sub] or $HOME/.config/[mosquitto_pub/sub] with one pair of -option value per line.

When parsing mosquitto_{pub,sub}, the values are truncated at the first space instead of end of line. Example:

~/.config/mosquitto_sub:

-h somehost
-p someport
-F %I [%t]: "%p" (retain=%r qos=%q msgid=%m)

yields:

$ mosquitto_sub -t \#
2021-01-29T22:55:31-0600

I've tried escaping the spaces and putting the entire value in single quotes, but escaping spaces isn't valid and wrapping in single quotes yields:

'2021-01-29T22:55:31-0600

~/.config/mosquitto_pub

-h somehost
-p someport 
-f /home/bob/test dir/msg.txt

Will generate an error because the value is truncated:

$ mosquitto_pub -t sometopic
Error: Unable to open file "/home/bob/test".
Error loading input file "/home/bob/test".

As a workaround I've replaced all spaces with underscores, which is awful.

[sectokia]

The culprit is in client_shared.c:
args[2] = strtok(NULL, " ");

my suggested bad fix would be:
args[2] = (strlen(line)>strlen(args[1])) ? &line[strlen(args[1])+2] : NULL;

[ralight]

@sectokia It's much easier than that, just a swap of a " " to "" :)