Re: [BUG] git send-email: incorrectly parses email address with comma

[Heinrich Schuchardt <xypron.glpk@gmx.de>]

On 05/12/2018 11:48 AM, Jeff King wrote:
> On Sat, May 12, 2018 at 10:21:46AM +0200, Heinrich Schuchardt wrote:
> 
>> Git send-email allows to combine multiple email addresses in one
>> parameter, e.g.
>>
>> --to="a@example.com, b@example.com"
>>
>> But email addresses may contain commas themselves:
>>
>> --to="LASTNAME, firstname <firstname.lastname@example.com>"
>>
>> This may lead to an error:
> 
> If the name contains syntactically relevant metacharacters, it can be
> quoted. So as a workaround, you can do:
> 
>   --to='"LASTNAME, firstname" <firstname.lastname@example.com>'
> 
> I think rfc822 actually requires even names with just spaces in them to
> be quoted, but git-send-email and most other mail programs are pretty
> lax about allowing just about anything outside of the <>, so people tend
> not to bother.
> 
>> If the string preceding a comma is not a valid email address do not
>> split it off.
> 
> That might work as a heuristic, though "is a valid email address" is a
> notoriously hard thing to check. Possibly looking for an "@" would catch
> most common cases, though.

A more elaborate test would be:
A string matching [\S\s]*<\S+@\S+.\S+>\s* is an email address.
A string matching \s*\S+@\S+.\S+\s* is an email address.
Both may need trimming of whitespace.
Any other string is not an email address.

Regards

Heinrich

> 
> -Peff
>