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document command substitution data limit

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Kurtis Rader
2017-08-01 16:46:02 -07:00
parent 4197420f39
commit 2bbcc5cbc8
2 changed files with 4 additions and 2 deletions
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doc_src/read.txt
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@@ -49,7 +49,7 @@ See the documentation for `set` for more details on the scoping rules for variab
When read reaches the end-of-file (EOF) instead of the separator, it sets `$status` to 1. If not, it sets it to 0.
Fish has a default limit of 10 MiB on the number of characters each `read` will consume. If you attempt to read more than that `$status` is set to 122 and the variable will be empty. You can modify that limit by setting the `FISH_READ_BYTE_LIMIT` variable at any time including in the environment before fish starts running. This is a safety mechanism to keep the shell from consuming an unreasonable amount of memory if the input is malformed.
Fish has a default limit of 10 MiB on the number of characters each `read` will consume. If you attempt to read more than that `$status` is set to 122 and the variable will be empty. You can modify that limit by setting the `FISH_READ_BYTE_LIMIT` variable at any time including in the environment before fish starts running. This is a safety mechanism to keep the shell from consuming an unreasonable amount of memory if the input is malformed. Note that this limit also affects how much data a command substitution is allowed to output.
\subsection read-history Using another read history file