CLAUDE_CODE_DIR_SYNC_FFWD
A Claude Code environment variable, read out of the shipped bundle. It was in the build from v2.1.242 and was gone by v2.1.285.
Set CLAUDE_CODE_LEGACY_BUNDLE to true to go back to the old single-file build shape.
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.242.
In the changelogs
5Releases whose published page names CLAUDE_CODE_DIR_SYNC_FFWD.
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v2.1.285
Directory sync for cloud sessions and its environment variables removed
The directory-sync machinery for cloud sessions is gone, and its
CLAUDE_CODE_DIR_SYNC_*andCLAUDE_CODE_DISABLE_DIR_SYNCvariables no longer do anythingfound in this entry's text
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v2.1.285
Directory sync appears to be removed
Claude Code no longer reads
CLAUDE_CODE_DIR_SYNC_FFWD, and the waiting-message text no longer mentions files syncingfound in this entry's text
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v2.1.242
CLAUDE_CODE_LEGACY_BUNDLE restores the old non-split bundle shape
Set CLAUDE_CODE_LEGACY_BUNDLE to true to go back to the old single-file build shape.
named in this entry, found in this entry's text
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v2.1.242
Your local branch is moved forward onto the cloud session's commits
Your local branch fast-forwards onto a cloud session's commits unless you turn it off.
named in this entry, found in this entry's text
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v2.1.242
Cloud directory sync gains git and tar-archive engines beside the per-file lane
Cloud file sync gains git-bundle and tar-archive modes, but you still sync file by file.
named in this entry, found in this entry's text
First cited
0No release's published evidence quotes this name. The ledger indexes the Evidence lines of every changelog on this site, so this says nobody here has ever quoted it; it says nothing about how old the name is.
Presence across releases
2Build by build
56One row per release since the first build this name was read out of. Absent means the build was read and the name was not in it, never mined means no bundle for that release was ever archived, and a declared type or a default is only ever what that release's own bundle stated.
Read out of the published npm bundle release by release, and out of Anthropic's own documentation as this site captured it. Nothing on this page is a description anybody here wrote about what the environment variable does. All environment variables.