https://bugs.documentfoundation.org/show_bug.cgi?id=69460
--- Comment #26 from Tor Lillqvist <t...@iki.fi> ---
The assertion failure is not related to this bug but caused by a very recently
added assertion that I think can actually be removed.
I don't understand why the initial description of this bug makes it sound so
complicated and special case. Comment #13 is much better. But even the "save"
step is unnecessary; just quit and choose "Don't" save changes is enough to see
the slowness.
Presumably the slowness is caused when some of the formats that the copied
column is exported in to the system clipboard insist on exporting all one
million rows of the column, even if just two cells actually exist. Here is some
timings. The "== flavour" rows are printed before the column is exported into
that format.
> 0.000:debug:5098:49559583: >> AquaClipboard::flushClipboard()
> 0.000:debug:5098:49559583: == flavour:
> application/x-openoffice-embed-source-xml;windows_formatname="Star Embed
> Source (XML)"
> 0.548:debug:5098:49559583: == flavour:
> application/x-openoffice-objectdescriptor-xml;windows_formatname="Star Object
> Descriptor (XML)"
> 0.549:debug:5098:49559583: == flavour:
> application/x-openoffice-gdimetafile;windows_formatname="GDIMetaFile"
> 0.552:debug:5098:49559583: == flavour:
> application/x-openoffice-emf;windows_formatname="Image EMF"
> 0.556:debug:5098:49559583: == flavour:
> application/x-openoffice-wmf;windows_formatname="Image WMF"
> 0.559:debug:5098:49559583: == flavour: NeXT TIFF v4.0 pasteboard type
> 1.534:debug:5098:49559583: == flavour:
> application/x-openoffice-bitmap;windows_formatname="Bitmap"
> 2.411:debug:5098:49559583: == flavour: image/bmp
> 3.288:debug:5098:49559583: == flavour: Apple HTML pasteboard type
> 3.290:debug:5098:49559583: == flavour:
> application/x-openoffice-sylk;windows_formatname="Sylk"
> 3.492:debug:5098:49559583: == flavour:
> application/x-openoffice-link;windows_formatname="Link"
> 3.493:debug:5098:49559583: == flavour:
> application/x-openoffice-dif;windows_formatname="DIF"
> 5.092:debug:5098:49559583: == flavour: NSStringPboardType
> 5.095:debug:5098:49559583: == flavour: application/x-libreoffice-tsvc
> 5.096:debug:5098:49559583: == flavour: NeXT Rich Text Format v1.0 pasteboard
> type
> 5.096:debug:5098:49559583: == flavour: text/richtext
> 5.097:debug:5098:49559583: << AquaClipboard::flushClipboard()
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