format-patch: allow --rfc to optionally take a value, like --rfc=WIP
With the "--rfc" option, we can tweak the "[PATCH]" (or whatever string specified with the "--subject-prefix" option, instead of "PATCH") that we prefix the title of the commit with into "[RFC PATCH]", but some projects may want "[rfc PATCH]". Adding a new option, e.g., "--rfc-lowercase", to support such need every time somebody wants to use different strings would lead to insanity of accumulating unbounded number of such options. Allow an optional value specified for the option, so that users can use "--rfc=rfc" (think of "--rfc" without value as a short-hand for "--rfc=RFC") if they wanted to. This can of course be (ab)used to make the prefix "[WIP PATCH]" by passing "--rfc=WIP". Passing an empty string, i.e., "--rfc=", is the same as "--no-rfc" to override an option given earlier on the same command line. Signed-off-by: Junio C Hamano <gitster@pobox.com>
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@ -20,7 +20,7 @@ SYNOPSIS
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[--in-reply-to=<message-id>] [--suffix=.<sfx>]
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[--ignore-if-in-upstream] [--always]
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[--cover-from-description=<mode>]
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[--rfc] [--subject-prefix=<subject-prefix>]
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[--rfc[=<rfc>]] [--subject-prefix=<subject-prefix>]
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[(--reroll-count|-v) <n>]
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[--to=<email>] [--cc=<email>]
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[--[no-]cover-letter] [--quiet]
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@ -238,10 +238,15 @@ the patches (with a value of e.g. "PATCH my-project").
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value of the `format.filenameMaxLength` configuration
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variable, or 64 if unconfigured.
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--rfc::
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Prepends "RFC" to the subject prefix (producing "RFC PATCH" by
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default). RFC means "Request For Comments"; use this when sending
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an experimental patch for discussion rather than application.
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--rfc[=<rfc>]::
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Prepends the string _<rfc>_ (defaults to "RFC") to
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the subject prefix. As the subject prefix defaults to
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"PATCH", you'll get "RFC PATCH" by default.
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+
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RFC means "Request For Comments"; use this when sending
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an experimental patch for discussion rather than application.
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"--rfc=WIP" may also be a useful way to indicate that a patch
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is not complete yet ("WIP" stands for "Work In Progress").
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-v <n>::
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--reroll-count=<n>::
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