Hyperlinks in tracebacks in the shell

[Lucidiot]

During spring 2017, VTE-based terminal emulators started getting hyperlinks; not just detecting http:// links, but customizable links. See this Gist to learn more.

When IPython pretty-prints a traceback in the interactive shell, it could have a link to each file mentioned in the traceback. For example, in:

AssertionError                            Traceback (most recent call last)
~/somewhere/file.py in <module>
----> 1 assert False

~/somewhere/file.py could be printed as in printf '\e]8;;file://localhost/home/myself/somewhere/file.py\e\\~/somewhere/file.py\e]8;;\e\\', making it clickable to any compatible terminals, and easier to open in an editor or viewer. Note the use of localhost, to avoid issues in SSH as stated in this section of the gist. Since the URI is included as a parameter of the espace sequence, it would be ignored by incompatible terminals.