rclone/fs/config/configstruct
Nick Craig-Wood 75f5b06ff7 fs: fix setting stringArray config values from environment variables
After the config re-organisation, the setting of stringArray config
values (eg `--exclude` set with `RCLONE_EXCLUDE`) was broken and gave
a message like this for `RCLONE_EXCLUDE=*.jpg`:

    Failed to load "filter" default values: failed to initialise "filter" options:
    couldn't parse config item "exclude" = "*.jpg" as []string: parsing "*.jpg" as []string failed:
    invalid character '/' looking for beginning of value

This was caused by the parser trying to parse the input string as a
JSON value.

When the config was re-organised it was thought that the internal
representation of stringArray values was not important as it was never
visible externally, however this turned out not to be true.

A defined representation was chosen - a comma separated string and
this was documented and tests were introduced in this patch.

This potentially introduces a very small backwards incompatibility. In
rclone v1.67.0

    RCLONE_EXCLUDE=a,b

Would be interpreted as

    --exclude "a,b"

Whereas this new code will interpret it as

    --exclude "a" --exclude "b"

The benefit of being able to set multiple values with an environment
variable was deemed to outweigh the very small backwards compatibility
risk.

If a value with a `,` is needed, then use CSV escaping, eg

    RCLONE_EXCLUDE="a,b"

(Note this needs to have the quotes in so at the unix shell that would be

    RCLONE_EXCLUDE='"a,b"'

Fixes #8063
2024-09-23 17:33:09 +01:00
..
configstruct_test.go fs: fix setting stringArray config values from environment variables 2024-09-23 17:33:09 +01:00
configstruct.go fs: fix setting stringArray config values from environment variables 2024-09-23 17:33:09 +01:00
internal_test.go configstruct: fix parsing of invalid booleans in the config 2024-07-15 11:09:54 +01:00