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repl: improve doc for disabling REPL history on Windows

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Environment variables with empty values are not permitted on Windows. As
such, to disable persistent REPL history one or more spaces should be
used. Node will trim whitespace from the variable, resulting in a blank
variable at runtime and the desired behaviour.

PR-URL: https://github.com/nodejs/node/pull/25672
Fixes: https://github.com/nodejs/node/issues/25661
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Anto Aravinth <anto.aravinth.cse@gmail.com>
Reviewed-By: Bartosz Sosnowski <bartosz@janeasystems.com>
This commit is contained in:
Samuel D. Leslie 2019-01-24 09:45:02 +11:00 committed by Vse Mozhet Byt
parent 71b00f0b5b
commit 303585eb29
1 changed files with 4 additions and 2 deletions
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doc/api/repl.md
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@ -540,8 +540,10 @@ environment variables:
- `NODE_REPL_HISTORY` - When a valid path is given, persistent REPL history
will be saved to the specified file rather than `.node_repl_history` in the
user's home directory. Setting this value to `''` will disable persistent
REPL history. Whitespace will be trimmed from the value.
user's home directory. Setting this value to `''` (an empty string) will
disable persistent REPL history. Whitespace will be trimmed from the value.
On Windows platforms environment variables with empty values are invalid so
set this variable to one or more spaces to disable persistent REPL history.
- `NODE_REPL_HISTORY_SIZE` - Controls how many lines of history will be
persisted if history is available. Must be a positive number.
**Default:** `1000`.