[erlang-patches] [erlang-bugs] erlang.el indenter

Henrik Nord <>
Wed Aug 29 16:23:18 CEST 2012

On 08/28/2012 11:10 PM, Tomas Abrahamsson wrote:
> On Thu, Aug 23, 2012 at 12:07 AM, Tuncer Ayaz <> wrote:
>> On Wed, Aug 22, 2012 at 11:42 PM, Tomas Abrahamsson wrote:
>>>>>> Here is a patch for indenting of multi-line strings
>>>> A quick test revealed that erlang.el from 'pu' erroneously
>>>> re-indents the already correctly indented rebar:option_spec_list/0
>>>> and also rebar:commands/0. Can you reproduce the regression?
>>> I see what you mean. Will try to fix it.
>> Thanks. Are the erlang.el changes in 'pu' susceptible to new
>> mis-indentations by nature? The original issue is not important
>> enough to introduce regressions if fixing it means erlang.el
>> will get imprecise or hard to get right.
> For the time being, would it be possible to
> back this patch out from pu? Not sure if I can fix it
> in time for the upcoming release.
That's no problem, just get back to me when you have a new version.
> Apologies for any trouble this may cause.
> The solution path I ventured into was not a good one,
> I realized. I had only tried it with an older version
> of rebar, so didn't catch the mis-indentation.

>> Out of curiosity, what about using erl_parse, erl_scan, etc. via an
>> escript instead? Does that sound viable and make sense?
> That might be a possibility, although, it might
> require another grammar than the ordinary erlang
> grammar, there are some issues one would need
> to handle: being able to indent before the function
> is completely written, and being able to indent
> comments. Also, I guess macros could be a
> challenge.
> BRs
> Tomas
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/Henrik Nord Erlang/OTP

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