You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
ElsewhereArea: what it touches
ImprovementsKind: in v2.1.292,
ImprovementsSection of the release
What
On Linux, Claude Code now asks the system for the real location of a file after opening it, using the /proc/self/fd area that Linux provides. If the system cannot answer, Claude Code refuses the read with a message like: Refusing to read : the system would not say where it was opened.
One mode, called by-spelling, skips this check and returns nothing instead of refusing.
Why
This makes the permission checks on file reads harder to get around. On systems where /proc is not available, reads outside the by-spelling mode can now fail instead of going ahead.