[vim/vim] Can't open URL with gx after opening vim session (Issue #20934)

[GamesByFelix]

GamesByFelix created an issue (vim/vim#20934)

Steps to reproduce

1. Create a text file url.txt containing a website URL, e.g. https://www.vim.org
2. Move the cursor over the URL and press gx to open it in your browser
3. Create a session file with :mks!
4. Exit vim and re-open it with vim -S
5. Move the cursor over the URL and press gx and get the error messages:

E117: Unknown function: GetWordUnderCursor                                        
E116: Invalid arguments for function dist#vim9#Open

Expected behaviour

The gx command should open the URL no matter if vim is running a session or not.

Version of Vim

9.2.900

Environment

macOS 26.5.2
Terminal / xterm 2.15
zsh 5.9 (arm64-apple-darwin25.0)

and

Fedora Linux 44 (Workstation Edition)
Termial / ptyxis 50.1
bash 5.3.9

Logs and stack traces

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[GamesByFelix]

GamesByFelix left a comment (vim/vim#20934)

The workaround for this issue is to select the URL in visual mode (e.g. viW) and then open it with gx.

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[Foxe Chen]

64-bitman left a comment (vim/vim#20934)

what is the value of 'sessionoptions' option?

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[GamesByFelix]

GamesByFelix left a comment (vim/vim#20934)

what is the value of 'sessionoptions' option?

In both environments:
sessionoptions=blank,buffers,curdir,folds,help,options,tabpages,winsize,terminal

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