redis-server command line arguments support take one bulk string with spaces...
redis-server command line arguments support take one bulk string with spaces for MULTI_ARG configs parsing. And allow options value to use the -- prefix (#10660) ## Take one bulk string with spaces for MULTI_ARG configs parsing Currently redis-server looks for arguments that start with `--`, and anything in between them is considered arguments for the config. like: `src/redis-server --shutdown-on-sigint nosave force now --port 6380` MULTI_ARG configs behave differently for CONFIG command, vs the command line argument for redis-server. i.e. CONFIG command takes one bulk string with spaces in it, while the command line takes an argv array with multiple values. In this PR, in config.c, if `argc > 1` we can take them as is, and if the config is a `MULTI_ARG` and `argc == 1`, we will split it by spaces. So both of these will be the same: ``` redis-server --shutdown-on-sigint nosave force now --shutdown-on-sigterm nosave force redis-server --shutdown-on-sigint nosave "force now" --shutdown-on-sigterm nosave force redis-server --shutdown-on-sigint nosave "force now" --shutdown-on-sigterm "nosave force" ``` ## Allow options value to use the `--` prefix Currently it decides to switch to the next config, as soon as it sees `--`, even if there was not a single value provided yet to the last config, this makes it impossible to define a config value that has `--` prefix in it. For instance, if we want to set the logfile to `--my--log--file`, like `redis-server --logfile --my--log--file --loglevel verbose`, current code will handle that incorrectly. In this PR, now we allow a config value that has `--` prefix in it. **But note that** something like `redis-server --some-config --config-value1 --config-value2 --loglevel debug` would not work, because if you want to pass a value to a config starting with `--`, it can only be a single value. like: `redis-server --some-config "--config-value1 --config-value2" --loglevel debug` An example (using `--` prefix config value): ``` redis-server --logfile --my--log--file --loglevel verbose redis-cli config get logfile loglevel 1) "loglevel" 2) "verbose" 3) "logfile" 4) "--my--log--file" ``` ### Potentially breaking change `redis-server --save --loglevel verbose` used to work the same as `redis-server --save "" --loglevel verbose` now, it'll error!
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