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curl: make %output{} in -w specify a file to write to

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It can be used multiple times. Use %output{>>name} to append.

Add docs. Test 990 and 991 verify.

Idea: #11400
Suggested-by: ed0d2b2ce19451f2
Closes #11416
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Daniel Stenberg 2023-07-31 00:00:20 +02:00
parent 92ac5a8d59
commit 1032f56efa
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6 changed files with 175 additions and 5 deletions
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16
docs/cmdline-opts/write-out.d
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@ -25,10 +25,18 @@ output a newline by using \\n, a carriage return with \\r and a tab space with
The output will be written to standard output, but this can be switched to
standard error by using %{stderr}.
Output HTTP headers from the most recent request by using \fB%header{name}\fP
where \fBname\fP is the case insensitive name of the header (without the
trailing colon). The header contents are exactly as sent over the network,
with leading and trailing whitespace trimmed. Added in curl 7.84.0.
Output HTTP headers from the most recent request by using *%header{name}*
where *name* is the case insensitive name of the header (without the trailing
colon). The header contents are exactly as sent over the network, with leading
and trailing whitespace trimmed. Added in curl 7.84.0.
Select a specific target destination file to write the output to, by using
*%output{name}* where *name* is the full file name. The output following that
instruction is then written to that file. More than one *%output{}* instruction
can be specified in the same write-out argument. If the file name cannot be
created, curl will leave the output to the one used prior to the *%output{}*
instruction. Use *%output{>>name}* to append data to an existing file. Added in
curl 8.3.0.
.B NOTE:
In Windows the %-symbol is a special symbol used to expand environment