Windows absolute paths not supported

[superle3]

Description

using absolute paths on windows doesn't work

To reproduce

Set the PDFVIEWER environment variable to an absolute path like C:\Program Files\SumatraPDF\SumatraPDF.exe
and
run the following in powershell

echo $env:PDFVIEWER
texdoc latex

get output

C:\Program Files\SumatraPDF\SumatraPDF.exe
'C' is not recognized as an internal or external command,
operable program or batch file.
texdoc error: Failed to execute: C "c:\texlive\2024\texmf-dist\doc\latex\latex-doc-ptr\latex-doc-ptr.pdf"

Additional info

See the code below

texdoc/script/texdoclib-config.tlu

Lines 228 to 240 in b62d3af

	-- viewers
	local function set_config_viewer_from_vars(key, vars)
	for _, var in ipairs(vars) do
	local value = os.getenv(var)
	-- support colon-separated list
	value = value and string.gmatch(value, '([^:]+)')()
	if value then
	set_config_element(key, value, {src='env', name=var})
	end
	end
	end

value = value and string.gmatch(value, '([^:]+)')() only works for unix and not windows.
If on windows (not wsl) value = value and string.gmatch(value, '([^;]+)')() / ; should be used instead.

Workaround

set PDFVIEWER=sumatrapdf and add C:\Program Files\SumatraPDF to PATH environment variable.

[wtsnjp]

Thanks for reporting this — it seems you’re right. I’ll check it out when I have time.