add -g flag for opening file from the CLI

[bpmct]

With code-server and VS Code, you can currently specify the working directory:

code-server /home/ben/project # works ✅
code /home/coder/project # works ✅

However, you are unable to use the -g flag in code-server:

code -g /home/coder/project/main.py:34 # works ✅
code-server -g /home/coder/project/main.py:3 # does not work ❌

code-server& # launch a code-server instance, keep running
code-server -r /home/coder/project/main.py # works ✅
code-server -r /home/coder/project/main.py:2 # does not work ❌

This would be great to have closer feature parity with the code command. Some more context, or duplicates are #164 #2023

[stale]

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