Debugger issues related to path mappings and case sensitive paths

• If drive letter is in lower case, then path mappings will not work

• Note: Its possible drive letter can be in lower case (e.g. user set path in shell using a lower case drive letter, e.g. cd c:/x.... (at this point, all paths have lower case c).

• Debugging opens new all-lowercase file #5049 (PTVSD)

• Debugger does not work with google drives designated as g: or any drive letter #4658 (VSCode)

• Remote debugging fails due to incorrect path mappings #5075 (PTVSD, Path Mapping)

• Remote debugging failed #5094 (PTVSD, Path Mapping)

• Duplicate file tab during debugging on Windows #4166

• Multi process debugging with launch does not work due to path mappings

  • Solution https://github.com/Microsoft/vscode-python/issues/3568 April Sprint

• VS Code opening duplicate window with remote debugging and live reloading #3185 (VS Code https://github.com/Microsoft/vscode/issues/67523)

[mpiroc]

FYI, this is a blocker (on Windows or other case-insensitive filesystems) for path mappings that use ${workspaceFolder}. Because ${workspaceFolder} is normalized to all-lower-case, it always results in a case-mismatch. If I replace ${workspaceFolder} with the hard-coded (case-sensitive) absolute path, it works. But this is not portable.

// launch.json
{
    ...
    "pathMappings": [
        {
            "localRoot": "${workspaceFolder}/foo/bar",
            "remoteRoot": "/var/task"
        }
    ]
}

With a breakpoint in foo/bar/main.py, I receive this error message:

pydev debugger: warning: trying to add breakpoint to file that does not exist: /var/task/C:/Users/pirocchi/my/workspace/foo/bar/main.py (will have no effect)

Where the path should be /var/task/main.py.

[karthiknadig]

Closing this as stale. Please create separate bugs if this are still occurring.