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Date:   Mon, 20 May 2019 15:38:06 -0600
From:   David Ahern <>
To:     Matteo Croce <>,
Cc:     Stephen Hemminger <>
Subject: Re: [PATCH iproute2-next] treewide: refactor help messages

On 5/17/19 7:38 AM, Matteo Croce wrote:
> Every tool in the iproute2 package have one or more function to show
> an help message to the user. Some of these functions print the help
> line by line with a series of printf call, e.g. ip/xfrm_state.c does
> 60 fprintf calls.
> If we group all the calls to a single one and just concatenate strings,
> we save a lot of libc calls and thus object size. The size difference
> of the compiled binaries calculated with bloat-o-meter is:


> While at it, indent some strings which were starting at column 0,
> and use tabs where possible, to have a consistent style across helps.
> Signed-off-by: Matteo Croce <>
> ---

applied to iproute2-next. Thanks for taking the time to clean this up.

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