Segfault on %5C data

[HKGx]

MathJax renders %5C as SVG with width and height equal to 0 and it's throwing a segfault.

In code, we're simply to loadImage from SVG string buffer.

rendertex/src/services/SvgToCanvas.ts

Line 6 in 5547c53

async function svgToCanvas(

PID 13004 received SIGSEGV for address: 0x25d66dad
SymInit: Symbol-SearchPath: '.;C:\Users\hkg90\Projects\rendertex;C:\Program Files\nodejs;C:\WINDOWS;C:\WINDOWS\system32;SRV*C:\websymbols*http://msdl.microsoft.com/download/symbols;', symOptions: 530, UserName: 'hkg'
OS-Version: 10.0.19043 () 0x100-0x1
C:\Users\hkg90\Projects\rendertex\node_modules\segfault-handler\src\StackWalker.cpp (941): StackWalker::ShowCallstack
C:\Users\hkg90\Projects\rendertex\node_modules\segfault-handler\src\segfault-handler.cpp (242): segfault_handler
00007FFA42588A4C (ntdll): (filename not available): RtlDeleteAce
00007FFA42561276 (ntdll): (filename not available): RtlRaiseException
00007FFA425B0CAE (ntdll): (filename not available): KiUserExceptionDispatcher
00007FFA25D66DAD (libgobject-2.0-0): (filename not available): g_type_check_instance_is_fundamentally_a
00007FFA25D4B993 (libgobject-2.0-0): (filename not available): g_object_unref
00007FFA25EE87B4 (canvas): (filename not available): Canvas::data
00007FFA25EE5A22 (canvas): (filename not available): Canvas::data
00007FFA25EB6967 (canvas): (filename not available): Canvas::data
00007FF755D86479 (node): (filename not available): v8::internal::Builtins::builtin_handle
00007FF755D85A11 (node): (filename not available): v8::internal::Builtins::builtin_handle
00007FF755D85D01 (node): (filename not available): v8::internal::Builtins::builtin_handle
00007FF755D85B43 (node): (filename not available): v8::internal::Builtins::builtin_handle
00007FF755E5E6E1 (node): (filename not available): v8::internal::SetupIsolateDelegate::SetupHeap

I snooped out the log but it doesn't tell me much.

There's already an issue open at Automattic/node-canvas#1400 but it's not resolved

[HKGx]

For a simple hack we can implement the same thing used in: webhintio/hint#2204

though we probably should override the viewbox's 0 0 to 1 1

edit: setting viewbox doesn't work

[HKGx]

Current status: trying to see if https://github.com/lovell/sharp would do a better job

[HKGx]

Just pushed an update in 4b5a8b7, we switched over from canvas to sharp