In Windows, we must manually handle wildcards like ? and *. We use FindFirstFileW() in loader.cxx to handle the wildcards. FindFirstFileW() may not handle paths over 255 characters unless a \\?\ is prepended. If given an absolute path prepend a \\?\.
Steps to Reproduce:
Long path names do not have their wildcards expanded.
Long path names have their wildcards expanded.
User Profile Reset: No
Taken from Mike's comments on https://gerrit.libreoffice.org/c/core/+/106393
I would suggest using PathCchCanonicalizeEx for this, with PATHCCH_ENSURE_IS_EXTENDED_LENGTH_PATH flag. It fits perfectly for the task, except conversion of "/" into "\" - it does everything else, like removing "." and "..", making sure the path has the "\\?\" in case when the mask is shorter than 2MAX_PATH, but the found name would be longer ... but the problem is, the function is supported since Windows 8, while our baseline is Windows 7 still.
(In reply to Mike Kaganski from comment #1)
> but the
> problem is, the function is supported since Windows 8, while our baseline is
> Windows 7 still.
On the other hand, https://stackoverflow.com/questions/57354840/which-dll-has-pathcchappend suggests that the function may be in api-ms-win-core-path-l1-1-0.dll, which is part of UCRT, which we depend on, and which we require on Windows 7. The function is not guarded by any "#if _WIN32_WINNT >= 0x0602" thing in pathcch.h - so maybe it's actually works on Win7 SP1 with UCRT? Could you check?
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