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nanahi
01e68e653c
When converting list options to strings and the value is empty, an
empty string is returned. This is true for key value list and object
settings list options. However, for string list options, there is an
edge case: if the list exists but has no element (which can happen
when using change-list command), it behaves as if the property does
not exist and returns "(error)". This causes confusing messages when
toggling glsl-shaders at runtime and seeing "(error)" printed as the
value when all shaders are toggled off, for example.
8461143ed7 attempted to fix it, which
fixed the case for unset string list, but not for a list with no
element.
Fix this by making sure an empty string is returned in this case.