Panic for resources.GetMatch(“https://picsum.photos/400/300.webp”) on Windows

[willfaught]

See https://discourse.gohugo.io/t/bug-panic-for-resources-getmatch-https-picsum-photos-400-300-webp-on-windows/43048.

Note: This issue is about fixing Hugo so the panics don't happen at all, and so that behavior is consistent across Mac, Linux, and Windows. The fact that there's a workaround is irrelevant. GetMatch shouldn't panic when given a URL.

This issue is also about having Hugo print the actual panic stack trace so it's easier to debug situations like this. There's nothing actionable about the nil reference message without any context.

What version of Hugo are you using (hugo version)?

$ hugo version
hugo v0.110.0+extended darwin/amd64 BuildDate=unknown

Does this issue reproduce with the latest release?

Yes

[jmooring]

These are the patterns that are not Windows-friendly:

FAIL (error 1)

{{ resources.GetMatch ":/a" }}
{{ resources.GetMatch "a:/a" }}

FAIL (error 2)

{{ resources.Get ":" }}
{{ resources.Get ":/" }}
{{ resources.Get "a:" }}

FAIL (error 3)

{{ resources.Get "/" }}

error 1 : error calling GetMatch: runtime error: invalid memory address or nil pointer dereference

error 2: executing "main" at <resources.Get>: error calling Get: CreateFile C:\Users\joe\Code\hugo-testing\assets:: The filename, directory name, or volume label syntax is incorrect.

error 3: executing "main" at <resources.Get>: error calling Get: dirs not supported resource types

These all work fine on Windows

PAGE RESOURCE

{{ .Resources.GetMatch ":" }} 
{{ .Resources.GetMatch ":/" }} 
{{ .Resources.GetMatch ":/a" }} 
{{ .Resources.GetMatch "/" }} 
{{ .Resources.GetMatch "/a" }} 
{{ .Resources.GetMatch "a:" }} 
{{ .Resources.GetMatch "a:/" }} 
{{ .Resources.GetMatch "a:/a" }} 
{{ .Resources.GetMatch "a:a" }} 
{{ .Resources.GetMatch "a" }}

{{ .Resources.Get ":" }} 
{{ .Resources.Get ":/" }} 
{{ .Resources.Get ":/a" }} 
{{ .Resources.Get "/" }} 
{{ .Resources.Get "/a" }} 
{{ .Resources.Get "a:" }} 
{{ .Resources.Get "a:/" }} 
{{ .Resources.Get "a:/a" }} 
{{ .Resources.Get "a:a" }} 
{{ .Resources.Get "a" }}

GLOBAL RESOURCE

{{ resources.GetMatch ":" }} 
{{ resources.GetMatch ":/" }} 
{{ resources.GetMatch "/a" }} 
{{ resources.GetMatch "a:" }} 
{{ resources.GetMatch "a:/" }} 
{{ resources.GetMatch "a:a" }} 
{{ resources.GetMatch "a" }}

{{ resources.Get "/a" }}
{{ resources.Get "a:/" }}
{{ resources.GetMatch "a:a" }}
{{ resources.GetMatch "a" }}

[github-actions]

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