4c7cdb8fea
The line annotation as implemented in #5420 had two shortcomings: * It required the height of virtual text lines to be known ahead time * It checked for line anchors at every grapheme The first problem made the API impractical to use in practice because almost all virtual text needs to be softwrapped. For example inline diagnostics should be softwrapped to avoid cutting off the diagnostic message (as no scrolling is possible). While more complex virtual text like side by side diffs must dynamically calculate the number of empty lines two align two documents (which requires taking account both softwrap and virtual text). To address this, the API has been refactored to use a trait. The second issue caused some performance overhead and unnecessarily complicated the `DocumentFormatter`. It was addressed by only calling the trait mentioned above at line breaks (instead of always). This allows offers additional flexibility to annotations as it offers the flexibility to align lines (needed for side by side diffs). |
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