Test multiline content processing.

Test quotes that span multiple lines. See <https://github.com/OI-wiki/OI-wiki/blob/master/docs/lang/array.md?plain=1#L79-L80>.

Test multiple fullstops in content.

Test multiple quotes in content.

Test different skip block types in sequence.

Test one skip block type nested inside another.

Test handling of what appears to be nested quotes.

Test nested skip blocks preserve content.

Test nested skip blocks preserve content.

Test with nested skip blocks.

Test nested skip blocks.

Test content without fullstops remains unchanged.

Test content without quotes remains unchanged.

Non-debug log types should print even if RUNNER_DEBUG is not set.

Test postprocessing replaces fullstop correctly.

Test preprocessing applies indentation fixes correctly.

Test quotes in different contexts.

Test StopIteration raised when no different element found.

Test that Chinese fullstop is replaced with middle dot.

Test that left double quote is replaced with Chinese corner bracket.

Test that right double quote is replaced with Chinese corner bracket.

Test same content line affected by different skip blocks.

Test no logging when RUNNER_DEBUG is not set.

Test that single line gets trailing newline.

Single quotes after non-alpha ASCII letters should be treated as apostrophes.

Single quotes after non-alpha ASCII letters should be treated as quotes, not apostrophes.

Test single quote handling with skip blocks.

Test with single skip block.

Test that content in skip blocks is not modified. This tests the continue branch when line_origins[i] == -1.

Test that content in skip blocks is not modified. This tests the continue branch when line_origins[i] == -1.

Test that skip blocks are preserved during content modification.

Test that skip blocks are preserved during processing.

Test that skip blocks are preserved unchanged.

Test tab replacement with spaces.

Test that tabs in skip blocks are preserved.

Test tab replacement with spaces.

Test error handling for unclosed skip block.

Test error handling for unclosed skip block.

Test processing with unicode content.

Test content with unicode characters.

Test error handling for unopened skip block.

Test error handling for unopened skip block.

Test lines with only whitespace characters.