On 30/01/2021 15:42, Eli Zaretskii wrote:
This works: M-! xdg-open /tmp/test.pdf RET This doesn't work: M-& xdg-open /tmp/test.pdf RET This doesn't work: M-x shell RET xdg-open /tmp/test.pdf RET
Geraldo, "M-x shell" case is rather strange. Could you, please, confirm ones more that okular window with the file content does not appear if you call xdg-open from an *interactive* emacs shell buffer? The link to an emacs-orgmode list message, that I have posted earlier, explains why async-shell-command *may* fail while shell-command should work reliably. I am really surprised by failure when command is executed in a [e]shell buffer.
How about asking the xdg-open developers to help us figure out the reason? Or, failing that, debug xdg-open in the problematic situations to find out what fails there and why? E.g., could it be that it fails because stdin/stdout is a PTY? what happens if you bind process-connection-type to nil when starting the async subprocess?
I do not think, it is xdg-open problem. It just calls kde-open5 that spawns actual handler and immediately exits.
