Re: [Wikitech-l] Mass migration to new syntax - PRO or CON?

2016-02-17 Thread Legoktm
On 02/16/2016 01:52 PM, Legoktm wrote:
> On 02/12/2016 07:27 AM, Daniel Kinzler wrote:
>> Please give a quick PRO or CON response as a basis for discussion.
> 
> No one has responded in a few days, and the current count is 13-5-2, so
> I'm going to find a time to do the mass migration when there aren't that
> many people making core changes and do this today or tomorrow.

{{done}}.

-- Legoktm

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Re: [Wikitech-l] Mass migration to new syntax - PRO or CON?

2016-02-16 Thread Greg Grossmeier

> FYI for future reference Phabricator has a great poll feature that may be
> useful for these kind of votes:
> https://phabricator.wikimedia.org/vote/

See an example at:
https://phabricator.wikimedia.org/V7

-- 
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| identi.ca: @gregA18D 1138 8E47 FAC8 1C7D |

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Re: [Wikitech-l] Mass migration to new syntax - PRO or CON?

2016-02-16 Thread Jon Robson
FYI for future reference Phabricator has a great poll feature that may be
useful for these kind of votes:
https://phabricator.wikimedia.org/vote/


On Tue, Feb 16, 2016 at 1:52 PM, Legoktm 
wrote:

> On 02/12/2016 07:27 AM, Daniel Kinzler wrote:
> > Please give a quick PRO or CON response as a basis for discussion.
>
> No one has responded in a few days, and the current count is 13-5-2, so
> I'm going to find a time to do the mass migration when there aren't that
> many people making core changes and do this today or tomorrow.
>
> -- Legoktm
>
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Re: [Wikitech-l] Mass migration to new syntax - PRO or CON?

2016-02-16 Thread Legoktm
On 02/12/2016 07:27 AM, Daniel Kinzler wrote:
> Please give a quick PRO or CON response as a basis for discussion.

No one has responded in a few days, and the current count is 13-5-2, so
I'm going to find a time to do the mass migration when there aren't that
many people making core changes and do this today or tomorrow.

-- Legoktm

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Re: [Wikitech-l] Mass migration to new syntax - PRO or CON?

2016-02-12 Thread Chad
On Fri, Feb 12, 2016 at 7:27 AM Daniel Kinzler  wrote:

> CON: don't do mass migration to new syntax, only start using new styles and
> features when touching the respective bit of code anyway. The argument is
> here
> that touching many lines of code, even if it's just for whitespace changes,
> causes merge conflicts when doing backports and when rebasing patches.
> E.g. if
> we touch half the files in the codebase to change to the new array syntax,
> who
> is going to manually rebase the couple of hundred patches we have open?
>
>
> As can be seen on the proposed patch I linked, several of the long term
> developers oppose mass changes like this. A quick round of feedback in the
> architecture committee draws a similar picture. However, perhaps there are
> compelling arguments for doing the mass migration that we haven't heard
> yet. So
> please give a quick PRO or CON, optionally with some rationale.
>
> My personal vote is CON. No rebase hell please! Changing to the syntax
> doesn't
> buy us anything.
>
>
CON, for all the reasons you mentioned. Also: style only changes are pain
when you're
trying to annotate/blame a particular line of code.

ESPECIALLY for something so silly as array formatting which gains us
*absolutely nothing*

-Chad
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Re: [Wikitech-l] Mass migration to new syntax - PRO or CON?

2016-02-12 Thread Jon Robson
On Fri, Feb 12, 2016 at 9:14 AM, Chad  wrote:

> On Fri, Feb 12, 2016 at 7:27 AM Daniel Kinzler 
> wrote:
>
> > CON: don't do mass migration to new syntax, only start using new styles
> and
> > features when touching the respective bit of code anyway. The argument is
> > here
> > that touching many lines of code, even if it's just for whitespace
> changes,
> > causes merge conflicts when doing backports and when rebasing patches.
> > E.g. if
> > we touch half the files in the codebase to change to the new array
> syntax,
> > who
> > is going to manually rebase the couple of hundred patches we have open?
> >
> >
> > As can be seen on the proposed patch I linked, several of the long term
> > developers oppose mass changes like this. A quick round of feedback in
> the
> > architecture committee draws a similar picture. However, perhaps there
> are
> > compelling arguments for doing the mass migration that we haven't heard
> > yet. So
> > please give a quick PRO or CON, optionally with some rationale.
> >
> > My personal vote is CON. No rebase hell please! Changing to the syntax
> > doesn't
> > buy us anything.
> >
> >
> CON, for all the reasons you mentioned. Also: style only changes are pain
> when you're
> trying to annotate/blame a particular line of code.
>
> ESPECIALLY for something so silly as array formatting which gains us
> *absolutely nothing*
>

Agree on many levels.
Please, let's focus on solving problems and improving how our code works
rather than how our code looks.

>
> -Chad
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Re: [Wikitech-l] Mass migration to new syntax - PRO or CON?

2016-02-12 Thread Marius Hoch

I also think we shouldn't mass migrate.

New code should use the new syntax and old code can be converted during 
larger refactors or similar things (when it is being touched anyway), 
but we shouldn't have "update syntax" only patches.


Cheers,

Marius

On 12.02.2016 16:27, Daniel Kinzler wrote:

Now that we target PHP 5.5, some people are itching to make use of some new
language features, like the new array syntax, e.g.
.

Mass changes like this, or similar changes relating to coding style, tend to
lead to controversy. I want to make sure we have a discussion about this here,
to avoid having the argument over and over on any such patch.

Please give a quick PRO or CON response as a basis for discussion.

In essence, the discussion boils down to two conflicting positions:

PRO: do mass migration to the new syntax, style, or whatever, as soon as
possible. This way, the codebase is in a consistent form, and that form is the
one we agreed is the best for readability. Doing changes like this is
gratifying, because it's low hanging fruit: it's easy to do, and has large
visible impact (well ok, visible in the source).

CON: don't do mass migration to new syntax, only start using new styles and
features when touching the respective bit of code anyway. The argument is here
that touching many lines of code, even if it's just for whitespace changes,
causes merge conflicts when doing backports and when rebasing patches. E.g. if
we touch half the files in the codebase to change to the new array syntax, who
is going to manually rebase the couple of hundred patches we have open?


As can be seen on the proposed patch I linked, several of the long term
developers oppose mass changes like this. A quick round of feedback in the
architecture committee draws a similar picture. However, perhaps there are
compelling arguments for doing the mass migration that we haven't heard yet. So
please give a quick PRO or CON, optionally with some rationale.

My personal vote is CON. No rebase hell please! Changing to the syntax doesn't
buy us anything.

-- daniel

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[Wikitech-l] Mass migration to new syntax - PRO or CON?

2016-02-12 Thread Daniel Kinzler
Now that we target PHP 5.5, some people are itching to make use of some new
language features, like the new array syntax, e.g.
.

Mass changes like this, or similar changes relating to coding style, tend to
lead to controversy. I want to make sure we have a discussion about this here,
to avoid having the argument over and over on any such patch.

Please give a quick PRO or CON response as a basis for discussion.

In essence, the discussion boils down to two conflicting positions:

PRO: do mass migration to the new syntax, style, or whatever, as soon as
possible. This way, the codebase is in a consistent form, and that form is the
one we agreed is the best for readability. Doing changes like this is
gratifying, because it's low hanging fruit: it's easy to do, and has large
visible impact (well ok, visible in the source).

CON: don't do mass migration to new syntax, only start using new styles and
features when touching the respective bit of code anyway. The argument is here
that touching many lines of code, even if it's just for whitespace changes,
causes merge conflicts when doing backports and when rebasing patches. E.g. if
we touch half the files in the codebase to change to the new array syntax, who
is going to manually rebase the couple of hundred patches we have open?


As can be seen on the proposed patch I linked, several of the long term
developers oppose mass changes like this. A quick round of feedback in the
architecture committee draws a similar picture. However, perhaps there are
compelling arguments for doing the mass migration that we haven't heard yet. So
please give a quick PRO or CON, optionally with some rationale.

My personal vote is CON. No rebase hell please! Changing to the syntax doesn't
buy us anything.

-- daniel

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Re: [Wikitech-l] Mass migration to new syntax - PRO or CON?

2016-02-12 Thread Toby Negrin
First, a thank you for Daniel for writing such a balanced, informative
email on a somewhat contentious subject!

As someone who will probably never touch a line of MW code, I'm not going
to actually vote. But I do have experience in large, complex codebases and
I'm going to argue for PRO.

We need to acknowledge that our codebase is going to change over time and
if we aren't explicit and accepting of this reality, we're not going to be
able to manage it well. Consider future developers who may only ever know
new syntax and their desire and ability to work on a codebase that doesn't
reflect new techniques and syntax in its implementation.

-Toby

On Fri, Feb 12, 2016 at 9:44 AM, Purodha Blissenbach <
puro...@blissenbach.org> wrote:

> CON, for all the reasons mentioned.
>
> Purodha
>
>
>
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Re: [Wikitech-l] Mass migration to new syntax - PRO or CON?

2016-02-12 Thread Ori Livneh
On Fri, Feb 12, 2016 at 7:27 AM, Daniel Kinzler 
wrote:

> Now that we target PHP 5.5, some people are itching to make use of some new
> language features, like the new array syntax, e.g.
> .
>
> Mass changes like this, or similar changes relating to coding style, tend
> to
> lead to controversy. I want to make sure we have a discussion about this
> here,
> to avoid having the argument over and over on any such patch.
>
> Please give a quick PRO or CON response as a basis for discussion.
>

PRO. These syntax changes were implemented in PHP at the cost of breaking
backward-compatibility, which tells you that people understood their value
and were willing to pay a cost for modernizing and simplifying the
language. If PHP was willing to pay it, why wouldn't we?
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Re: [Wikitech-l] Mass migration to new syntax - PRO or CON?

2016-02-12 Thread Stas Malyshev
Hi!

> Please give a quick PRO or CON response as a basis for discussion.

My opinion: if it ain't broke, don't fix it. It's ok to use new syntax
in new code, but spending time on changing perfectly working code just
to use new array syntax looks like misplaced effort to me.

There are new features that I would have more support immediate change,
like $this in closures - that makes code much more readable and less
bug-prone. Even then, I'm ambivalent whether we need to touch the code
that much, but I see a point of cleaning it up. But with array syntax,
it's just a different syntax, and I don't see a lot of reason to mess
with existing working code just to use it.
-- 
Stas Malyshev
smalys...@wikimedia.org

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Re: [Wikitech-l] Mass migration to new syntax - PRO or CON?

2016-02-12 Thread Stas Malyshev
Hi!

> PRO. These syntax changes were implemented in PHP at the cost of breaking
> backward-compatibility, which tells you that people understood their value

Wait, are we talking about the same thing? New array syntax does not
break BC. Or you mean that if we use new array syntax, we'd break BC
with older PHP versions? I'm not sure I understand your argument here.

-- 
Stas Malyshev
smalys...@wikimedia.org

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Re: [Wikitech-l] Mass migration to new syntax - PRO or CON?

2016-02-12 Thread Purodha Blissenbach

CON, for all the reasons mentioned.

Purodha


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Re: [Wikitech-l] Mass migration to new syntax - PRO or CON?

2016-02-12 Thread Alex Monk
PRO from me, for all the reasons mentioned by legoktm

On 12 February 2016 at 19:26, Legoktm  wrote:

> Hi,
>
> On 02/12/2016 07:27 AM, Daniel Kinzler wrote:
> > Now that we target PHP 5.5, some people are itching to make use of some
> new
> > language features, like the new array syntax, e.g.
> > .
> >
> > Mass changes like this, or similar changes relating to coding style,
> tend to
> > lead to controversy. I want to make sure we have a discussion about this
> here,
> > to avoid having the argument over and over on any such patch.
> >
> > Please give a quick PRO or CON response as a basis for discussion.
> >
> > In essence, the discussion boils down to two conflicting positions:
> >
> > PRO: do mass migration to the new syntax, style, or whatever, as soon as
> > possible. This way, the codebase is in a consistent form, and that form
> is the
> > one we agreed is the best for readability. Doing changes like this is
> > gratifying, because it's low hanging fruit: it's easy to do, and has
> large
> > visible impact (well ok, visible in the source).
>
> I'll offer an alternative, which is to convert all of them at once using
> PHPCS and then enforce that all new patches use [] arrays. You then only
> have one commit which changes everything, not hundreds you have to go
> through while git blaming or looking in git log.
>
> > CON: don't do mass migration to new syntax, only start using new styles
> and
> > features when touching the respective bit of code anyway. The argument
> is here
> > that touching many lines of code, even if it's just for whitespace
> changes,
> > causes merge conflicts when doing backports and when rebasing patches.
> E.g. if
> > we touch half the files in the codebase to change to the new array
> syntax, who
> > is going to manually rebase the couple of hundred patches we have open?
>
> There's no need to do it manually. Just tell people to run the phpcs
> autofixer before they rebase, and the result should be identical to
> what's already there. And we can have PHPCS run in the other direction
> for backports ([] -> array()).
>
> But if we don't do that, people are going to start converting things
> manually whenever they work on the code, and you'll still end up with
> hundreds of open patches needing rebase, except it can't be done
> automatically anymore.
>
> > My personal vote is CON. No rebase hell please! Changing to the syntax
> doesn't
> > buy us anything.
>
> Consistency buys us a lot. New developers won't be confused on whether
> to use [] or array(). It makes entry easier for people coming from other
> languages where [] is used for lists.
>
> I think you're going to end up in rebase hell regardless, so we should
> rip off the bandaid quickly and get it over with, and use the automated
> tools we have to our advantage.
>
> So, if we're voting, I'm PRO.
>
> -- Legoktm
>
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Re: [Wikitech-l] Mass migration to new syntax - PRO or CON?

2016-02-12 Thread Jon Robson
On Fri, Feb 12, 2016 at 10:26 AM, Stas Malyshev 
wrote:

> Hi!
>
> > PRO. These syntax changes were implemented in PHP at the cost of breaking
> > backward-compatibility, which tells you that people understood their
> value
>
> Wait, are we talking about the same thing? New array syntax does not
> break BC. Or you mean that if we use new array syntax, we'd break BC
> with older PHP versions? I'm not sure I understand your argument here.
>

I'm also a little puzzled. I thought it was a given we are embracing and
modernizing newer PHP versions.

The question as I understood it, is should we touch every piece of our
codebase in one big mega patch or update it gradually as and when we visit
bits of the codebase (I get the impression the latter isn't happening due
to a desire to have mega patches).


>
> --
> Stas Malyshev
> smalys...@wikimedia.org
>
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Re: [Wikitech-l] Mass migration to new syntax - PRO or CON?

2016-02-12 Thread Stas Malyshev
Hi!

> The question as I understood it, is should we touch every piece of our
> codebase in one big mega patch or update it gradually as and when we visit
> bits of the codebase (I get the impression the latter isn't happening due
> to a desire to have mega patches).

Same here and just to be clear, I'm for the gradual approach.

-- 
Stas Malyshev
smalys...@wikimedia.org

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Re: [Wikitech-l] Mass migration to new syntax - PRO or CON?

2016-02-12 Thread Legoktm
Hi,

On 02/12/2016 07:27 AM, Daniel Kinzler wrote:
> Now that we target PHP 5.5, some people are itching to make use of some new
> language features, like the new array syntax, e.g.
> .
> 
> Mass changes like this, or similar changes relating to coding style, tend to
> lead to controversy. I want to make sure we have a discussion about this here,
> to avoid having the argument over and over on any such patch.
> 
> Please give a quick PRO or CON response as a basis for discussion.
> 
> In essence, the discussion boils down to two conflicting positions:
> 
> PRO: do mass migration to the new syntax, style, or whatever, as soon as
> possible. This way, the codebase is in a consistent form, and that form is the
> one we agreed is the best for readability. Doing changes like this is
> gratifying, because it's low hanging fruit: it's easy to do, and has large
> visible impact (well ok, visible in the source).

I'll offer an alternative, which is to convert all of them at once using
PHPCS and then enforce that all new patches use [] arrays. You then only
have one commit which changes everything, not hundreds you have to go
through while git blaming or looking in git log.

> CON: don't do mass migration to new syntax, only start using new styles and
> features when touching the respective bit of code anyway. The argument is here
> that touching many lines of code, even if it's just for whitespace changes,
> causes merge conflicts when doing backports and when rebasing patches. E.g. if
> we touch half the files in the codebase to change to the new array syntax, who
> is going to manually rebase the couple of hundred patches we have open?

There's no need to do it manually. Just tell people to run the phpcs
autofixer before they rebase, and the result should be identical to
what's already there. And we can have PHPCS run in the other direction
for backports ([] -> array()).

But if we don't do that, people are going to start converting things
manually whenever they work on the code, and you'll still end up with
hundreds of open patches needing rebase, except it can't be done
automatically anymore.

> My personal vote is CON. No rebase hell please! Changing to the syntax doesn't
> buy us anything.

Consistency buys us a lot. New developers won't be confused on whether
to use [] or array(). It makes entry easier for people coming from other
languages where [] is used for lists.

I think you're going to end up in rebase hell regardless, so we should
rip off the bandaid quickly and get it over with, and use the automated
tools we have to our advantage.

So, if we're voting, I'm PRO.

-- Legoktm

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Re: [Wikitech-l] Mass migration to new syntax - PRO or CON?

2016-02-12 Thread Joaquin Oltra Hernandez
PRO from me too.

Doing it gradually is just going to make the codebase inconsistent, and
tooling can help point patches to the old style to migrate to the new one.

I'd rather do it quickly than have the inconsistency bleed through months
or years.

On Fri, Feb 12, 2016 at 8:28 PM, Alex Monk  wrote:

> PRO from me, for all the reasons mentioned by legoktm
>
> On 12 February 2016 at 19:26, Legoktm  wrote:
>
> > Hi,
> >
> > On 02/12/2016 07:27 AM, Daniel Kinzler wrote:
> > > Now that we target PHP 5.5, some people are itching to make use of some
> > new
> > > language features, like the new array syntax, e.g.
> > > .
> > >
> > > Mass changes like this, or similar changes relating to coding style,
> > tend to
> > > lead to controversy. I want to make sure we have a discussion about
> this
> > here,
> > > to avoid having the argument over and over on any such patch.
> > >
> > > Please give a quick PRO or CON response as a basis for discussion.
> > >
> > > In essence, the discussion boils down to two conflicting positions:
> > >
> > > PRO: do mass migration to the new syntax, style, or whatever, as soon
> as
> > > possible. This way, the codebase is in a consistent form, and that form
> > is the
> > > one we agreed is the best for readability. Doing changes like this is
> > > gratifying, because it's low hanging fruit: it's easy to do, and has
> > large
> > > visible impact (well ok, visible in the source).
> >
> > I'll offer an alternative, which is to convert all of them at once using
> > PHPCS and then enforce that all new patches use [] arrays. You then only
> > have one commit which changes everything, not hundreds you have to go
> > through while git blaming or looking in git log.
> >
> > > CON: don't do mass migration to new syntax, only start using new styles
> > and
> > > features when touching the respective bit of code anyway. The argument
> > is here
> > > that touching many lines of code, even if it's just for whitespace
> > changes,
> > > causes merge conflicts when doing backports and when rebasing patches.
> > E.g. if
> > > we touch half the files in the codebase to change to the new array
> > syntax, who
> > > is going to manually rebase the couple of hundred patches we have open?
> >
> > There's no need to do it manually. Just tell people to run the phpcs
> > autofixer before they rebase, and the result should be identical to
> > what's already there. And we can have PHPCS run in the other direction
> > for backports ([] -> array()).
> >
> > But if we don't do that, people are going to start converting things
> > manually whenever they work on the code, and you'll still end up with
> > hundreds of open patches needing rebase, except it can't be done
> > automatically anymore.
> >
> > > My personal vote is CON. No rebase hell please! Changing to the syntax
> > doesn't
> > > buy us anything.
> >
> > Consistency buys us a lot. New developers won't be confused on whether
> > to use [] or array(). It makes entry easier for people coming from other
> > languages where [] is used for lists.
> >
> > I think you're going to end up in rebase hell regardless, so we should
> > rip off the bandaid quickly and get it over with, and use the automated
> > tools we have to our advantage.
> >
> > So, if we're voting, I'm PRO.
> >
> > -- Legoktm
> >
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> >
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Re: [Wikitech-l] Mass migration to new syntax - PRO or CON?

2016-02-12 Thread Tyler Romeo
I think it's also pertinent to note that we are finally reaching a state where 
PHP-CS can be voting, which was only achieved after a lot of hard work to make 
our codebase consistent.

If we make these changes gradually, we're basically throwing away all of the 
work that was just done recently.

Regards,
-- 
Tyler Romeo
https://parent5446.nyc
0x405D34A7C86B42DF

From: Joaquin Oltra Hernandez <jhernan...@wikimedia.org>
Reply: Wikimedia developers <wikitech-l@lists.wikimedia.org>
Date: February 12, 2016 at 14:31:54
To: Wikimedia developers <wikitech-l@lists.wikimedia.org>
Subject:  Re: [Wikitech-l] Mass migration to new syntax - PRO or CON?  

PRO from me too.

Doing it gradually is just going to make the codebase inconsistent, and
tooling can help point patches to the old style to migrate to the new one.

I'd rather do it quickly than have the inconsistency bleed through months
or years.

On Fri, Feb 12, 2016 at 8:28 PM, Alex Monk <kren...@gmail.com> wrote:

> PRO from me, for all the reasons mentioned by legoktm
>
> On 12 February 2016 at 19:26, Legoktm <legoktm.wikipe...@gmail.com> wrote:
>
> > Hi,
> >
> > On 02/12/2016 07:27 AM, Daniel Kinzler wrote:
> > > Now that we target PHP 5.5, some people are itching to make use of some
> > new
> > > language features, like the new array syntax, e.g.
> > > <https://gerrit.wikimedia.org/r/#/c/269745/>.
> > >
> > > Mass changes like this, or similar changes relating to coding style,
> > tend to
> > > lead to controversy. I want to make sure we have a discussion about
> this
> > here,
> > > to avoid having the argument over and over on any such patch.
> > >
> > > Please give a quick PRO or CON response as a basis for discussion.
> > >
> > > In essence, the discussion boils down to two conflicting positions:
> > >
> > > PRO: do mass migration to the new syntax, style, or whatever, as soon
> as
> > > possible. This way, the codebase is in a consistent form, and that form
> > is the
> > > one we agreed is the best for readability. Doing changes like this is
> > > gratifying, because it's low hanging fruit: it's easy to do, and has
> > large
> > > visible impact (well ok, visible in the source).
> >
> > I'll offer an alternative, which is to convert all of them at once using
> > PHPCS and then enforce that all new patches use [] arrays. You then only
> > have one commit which changes everything, not hundreds you have to go
> > through while git blaming or looking in git log.
> >
> > > CON: don't do mass migration to new syntax, only start using new styles
> > and
> > > features when touching the respective bit of code anyway. The argument
> > is here
> > > that touching many lines of code, even if it's just for whitespace
> > changes,
> > > causes merge conflicts when doing backports and when rebasing patches.
> > E.g. if
> > > we touch half the files in the codebase to change to the new array
> > syntax, who
> > > is going to manually rebase the couple of hundred patches we have open?
> >
> > There's no need to do it manually. Just tell people to run the phpcs
> > autofixer before they rebase, and the result should be identical to
> > what's already there. And we can have PHPCS run in the other direction
> > for backports ([] -> array()).
> >
> > But if we don't do that, people are going to start converting things
> > manually whenever they work on the code, and you'll still end up with
> > hundreds of open patches needing rebase, except it can't be done
> > automatically anymore.
> >
> > > My personal vote is CON. No rebase hell please! Changing to the syntax
> > doesn't
> > > buy us anything.
> >
> > Consistency buys us a lot. New developers won't be confused on whether
> > to use [] or array(). It makes entry easier for people coming from other
> > languages where [] is used for lists.
> >
> > I think you're going to end up in rebase hell regardless, so we should
> > rip off the bandaid quickly and get it over with, and use the automated
> > tools we have to our advantage.
> >
> > So, if we're voting, I'm PRO.
> >
> > -- Legoktm
> >
> > ___
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> > https://lists.wikimedia.org/mailman/listinfo/wikitech-l
> >
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Re: [Wikitech-l] Mass migration to new syntax - PRO or CON?

2016-02-12 Thread Max Semenik
PRO: preserving the blame history is a false hope because we liberally move
files around, extract classes to separate files and so on. In other words,
we do the usual refactoring work and in process we break blame at all
times. Syntax updates are just another refactoring, nothing principally
new. And no, when hell freezes over are inconsistent code standards better:
we already have a code base inconsistent enough after 15 years of
development and MUST avoid creating more.

On Fri, Feb 12, 2016 at 11:28 AM, Alex Monk  wrote:

> PRO from me, for all the reasons mentioned by legoktm
>
> On 12 February 2016 at 19:26, Legoktm  wrote:
>
> > Hi,
> >
> > On 02/12/2016 07:27 AM, Daniel Kinzler wrote:
> > > Now that we target PHP 5.5, some people are itching to make use of some
> > new
> > > language features, like the new array syntax, e.g.
> > > .
> > >
> > > Mass changes like this, or similar changes relating to coding style,
> > tend to
> > > lead to controversy. I want to make sure we have a discussion about
> this
> > here,
> > > to avoid having the argument over and over on any such patch.
> > >
> > > Please give a quick PRO or CON response as a basis for discussion.
> > >
> > > In essence, the discussion boils down to two conflicting positions:
> > >
> > > PRO: do mass migration to the new syntax, style, or whatever, as soon
> as
> > > possible. This way, the codebase is in a consistent form, and that form
> > is the
> > > one we agreed is the best for readability. Doing changes like this is
> > > gratifying, because it's low hanging fruit: it's easy to do, and has
> > large
> > > visible impact (well ok, visible in the source).
> >
> > I'll offer an alternative, which is to convert all of them at once using
> > PHPCS and then enforce that all new patches use [] arrays. You then only
> > have one commit which changes everything, not hundreds you have to go
> > through while git blaming or looking in git log.
> >
> > > CON: don't do mass migration to new syntax, only start using new styles
> > and
> > > features when touching the respective bit of code anyway. The argument
> > is here
> > > that touching many lines of code, even if it's just for whitespace
> > changes,
> > > causes merge conflicts when doing backports and when rebasing patches.
> > E.g. if
> > > we touch half the files in the codebase to change to the new array
> > syntax, who
> > > is going to manually rebase the couple of hundred patches we have open?
> >
> > There's no need to do it manually. Just tell people to run the phpcs
> > autofixer before they rebase, and the result should be identical to
> > what's already there. And we can have PHPCS run in the other direction
> > for backports ([] -> array()).
> >
> > But if we don't do that, people are going to start converting things
> > manually whenever they work on the code, and you'll still end up with
> > hundreds of open patches needing rebase, except it can't be done
> > automatically anymore.
> >
> > > My personal vote is CON. No rebase hell please! Changing to the syntax
> > doesn't
> > > buy us anything.
> >
> > Consistency buys us a lot. New developers won't be confused on whether
> > to use [] or array(). It makes entry easier for people coming from other
> > languages where [] is used for lists.
> >
> > I think you're going to end up in rebase hell regardless, so we should
> > rip off the bandaid quickly and get it over with, and use the automated
> > tools we have to our advantage.
> >
> > So, if we're voting, I'm PRO.
> >
> > -- Legoktm
> >
> > ___
> > Wikitech-l mailing list
> > Wikitech-l@lists.wikimedia.org
> > https://lists.wikimedia.org/mailman/listinfo/wikitech-l
> >
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-- 
Best regards,
Max Semenik ([[User:MaxSem]])
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Re: [Wikitech-l] Mass migration to new syntax - PRO or CON?

2016-02-12 Thread Brad Jorsch (Anomie)
On Fri, Feb 12, 2016 at 2:26 PM, Legoktm 
wrote:

> I think you're going to end up in rebase hell regardless, so we should
> rip off the bandaid quickly and get it over with, and use the automated
> tools we have to our advantage.
>

This. Just get it over with, and then it's only one patch screwing up
rebases and blames instead of lots.



-- 
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Senior Software Engineer
Wikimedia Foundation
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Re: [Wikitech-l] Mass migration to new syntax - PRO or CON?

2016-02-12 Thread Ricordisamoa

Il 12/02/2016 20:26, Legoktm ha scritto:

Hi,

On 02/12/2016 07:27 AM, Daniel Kinzler wrote:

Now that we target PHP 5.5, some people are itching to make use of some new
language features, like the new array syntax, e.g.
.

Mass changes like this, or similar changes relating to coding style, tend to
lead to controversy. I want to make sure we have a discussion about this here,
to avoid having the argument over and over on any such patch.

Please give a quick PRO or CON response as a basis for discussion.

In essence, the discussion boils down to two conflicting positions:

PRO: do mass migration to the new syntax, style, or whatever, as soon as
possible. This way, the codebase is in a consistent form, and that form is the
one we agreed is the best for readability. Doing changes like this is
gratifying, because it's low hanging fruit: it's easy to do, and has large
visible impact (well ok, visible in the source).

I'll offer an alternative, which is to convert all of them at once using
PHPCS and then enforce that all new patches use [] arrays. You then only
have one commit which changes everything, not hundreds you have to go
through while git blaming or looking in git log.


CON: don't do mass migration to new syntax, only start using new styles and
features when touching the respective bit of code anyway. The argument is here
that touching many lines of code, even if it's just for whitespace changes,
causes merge conflicts when doing backports and when rebasing patches. E.g. if
we touch half the files in the codebase to change to the new array syntax, who
is going to manually rebase the couple of hundred patches we have open?

There's no need to do it manually. Just tell people to run the phpcs
autofixer before they rebase, and the result should be identical to
what's already there. And we can have PHPCS run in the other direction
for backports ([] -> array()).

But if we don't do that, people are going to start converting things
manually whenever they work on the code, and you'll still end up with
hundreds of open patches needing rebase, except it can't be done
automatically anymore.


My personal vote is CON. No rebase hell please! Changing to the syntax doesn't
buy us anything.

Consistency buys us a lot. New developers won't be confused on whether
to use [] or array(). It makes entry easier for people coming from other
languages where [] is used for lists.


Objection: other languages may use [] for lists, but array() is more 
similar to {} used for hash tables.




I think you're going to end up in rebase hell regardless, so we should
rip off the bandaid quickly and get it over with, and use the automated
tools we have to our advantage.

So, if we're voting, I'm PRO.

-- Legoktm

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Re: [Wikitech-l] Mass migration to new syntax - PRO or CON?

2016-02-12 Thread Gabriel Wicke
Overall I'm PRO, as consistency is worth a lot, and tools can apply
such changes consistently and efficiently.

We have applied broad formatting changes to large JS codebases using
jscs, which has worked well when those changes were well prepared.
Typically, this involved gradually refining the tool settings until a
reasonable diff was achieved.

On Fri, Feb 12, 2016 at 12:44 PM, Chad  wrote:
> On Fri, Feb 12, 2016 at 9:14 AM Chad  wrote:
>
>> On Fri, Feb 12, 2016 at 7:27 AM Daniel Kinzler 
>> wrote:
>>
>>> CON: don't do mass migration to new syntax, only start using new styles
>>> and
>>> features when touching the respective bit of code anyway. The argument is
>>> here
>>> that touching many lines of code, even if it's just for whitespace
>>> changes,
>>> causes merge conflicts when doing backports and when rebasing patches.
>>> E.g. if
>>> we touch half the files in the codebase to change to the new array
>>> syntax, who
>>> is going to manually rebase the couple of hundred patches we have open?
>>>
>>>
>>> As can be seen on the proposed patch I linked, several of the long term
>>> developers oppose mass changes like this. A quick round of feedback in the
>>> architecture committee draws a similar picture. However, perhaps there are
>>> compelling arguments for doing the mass migration that we haven't heard
>>> yet. So
>>> please give a quick PRO or CON, optionally with some rationale.
>>>
>>> My personal vote is CON. No rebase hell please! Changing to the syntax
>>> doesn't
>>> buy us anything.
>>>
>>>
>> CON, for all the reasons you mentioned. Also: style only changes are pain
>> when you're
>> trying to annotate/blame a particular line of code.
>>
>> ESPECIALLY for something so silly as array formatting which gains us
>> *absolutely nothing*
>>
>> -Chad
>>
>
> I change my vote to PRO.
>
> Mainly because people are gonna do it anyway...
>
> Last thoughts on the thread, I got bigger fish to fry than array syntax
> sugar :D
>
> -Chad
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-- 
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Principal Engineer, Wikimedia Foundation

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Re: [Wikitech-l] Mass migration to new syntax - PRO or CON?

2016-02-12 Thread Guillaume Lederrey
I'm not going to touch much PHP code any time soon, so feel free to ignore
my opinion.

I'm all for a consistent code base, or at least for a clear rule, even if a
bit arbitrary. Style issues are too often a matter of taste, so having a
clear and enforced rule allows us to stop the discussion and focus on
something more important.

Since we should have a rule, that rule should be as much as possible the
"state of the art". In this case it seems clear that new array syntax is a
winner.

Now that we have a rule, we need to enforce it (style check during CI).
This is a clear communication of the intent and again helps us stop wasting
time on manual reviews to enforce the rule. Code review time is precious
and should be spent on important stuff.

Last question: how do we manage the transition? Changing perfectly working
code just for the sake of style seems a bit like wasted resources. So we
should ensure that new code, or any code that is touched follows the new
rule, we ignore existing untouched code. We need the appropriate tooling to
make that possible, and that's why I need to find some time to deploy a
SonarQube instance as a proof of concept.


Sorry if I'm rambling, it's a bit late and my English is rusty... but I
always find discussions about code style interesting. Mostly because I want
us to stop having them ...



On Fri, Feb 12, 2016 at 9:54 PM, Gabriel Wicke  wrote:

> Overall I'm PRO, as consistency is worth a lot, and tools can apply
> such changes consistently and efficiently.
>
> We have applied broad formatting changes to large JS codebases using
> jscs, which has worked well when those changes were well prepared.
> Typically, this involved gradually refining the tool settings until a
> reasonable diff was achieved.
>
> On Fri, Feb 12, 2016 at 12:44 PM, Chad  wrote:
> > On Fri, Feb 12, 2016 at 9:14 AM Chad  wrote:
> >
> >> On Fri, Feb 12, 2016 at 7:27 AM Daniel Kinzler 
> >> wrote:
> >>
> >>> CON: don't do mass migration to new syntax, only start using new styles
> >>> and
> >>> features when touching the respective bit of code anyway. The argument
> is
> >>> here
> >>> that touching many lines of code, even if it's just for whitespace
> >>> changes,
> >>> causes merge conflicts when doing backports and when rebasing patches.
> >>> E.g. if
> >>> we touch half the files in the codebase to change to the new array
> >>> syntax, who
> >>> is going to manually rebase the couple of hundred patches we have open?
> >>>
> >>>
> >>> As can be seen on the proposed patch I linked, several of the long term
> >>> developers oppose mass changes like this. A quick round of feedback in
> the
> >>> architecture committee draws a similar picture. However, perhaps there
> are
> >>> compelling arguments for doing the mass migration that we haven't heard
> >>> yet. So
> >>> please give a quick PRO or CON, optionally with some rationale.
> >>>
> >>> My personal vote is CON. No rebase hell please! Changing to the syntax
> >>> doesn't
> >>> buy us anything.
> >>>
> >>>
> >> CON, for all the reasons you mentioned. Also: style only changes are
> pain
> >> when you're
> >> trying to annotate/blame a particular line of code.
> >>
> >> ESPECIALLY for something so silly as array formatting which gains us
> >> *absolutely nothing*
> >>
> >> -Chad
> >>
> >
> > I change my vote to PRO.
> >
> > Mainly because people are gonna do it anyway...
> >
> > Last thoughts on the thread, I got bigger fish to fry than array syntax
> > sugar :D
> >
> > -Chad
> > ___
> > Wikitech-l mailing list
> > Wikitech-l@lists.wikimedia.org
> > https://lists.wikimedia.org/mailman/listinfo/wikitech-l
>
>
>
> --
> Gabriel Wicke
> Principal Engineer, Wikimedia Foundation
>
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Re: [Wikitech-l] Mass migration to new syntax - PRO or CON?

2016-02-12 Thread bawolff
> Last thoughts on the thread, I got bigger fish to fry than array syntax
> sugar :D
>
> -Chad

+1 to that.

--
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Re: [Wikitech-l] Mass migration to new syntax - PRO or CON?

2016-02-12 Thread Chad
On Fri, Feb 12, 2016 at 9:14 AM Chad  wrote:

> On Fri, Feb 12, 2016 at 7:27 AM Daniel Kinzler 
> wrote:
>
>> CON: don't do mass migration to new syntax, only start using new styles
>> and
>> features when touching the respective bit of code anyway. The argument is
>> here
>> that touching many lines of code, even if it's just for whitespace
>> changes,
>> causes merge conflicts when doing backports and when rebasing patches.
>> E.g. if
>> we touch half the files in the codebase to change to the new array
>> syntax, who
>> is going to manually rebase the couple of hundred patches we have open?
>>
>>
>> As can be seen on the proposed patch I linked, several of the long term
>> developers oppose mass changes like this. A quick round of feedback in the
>> architecture committee draws a similar picture. However, perhaps there are
>> compelling arguments for doing the mass migration that we haven't heard
>> yet. So
>> please give a quick PRO or CON, optionally with some rationale.
>>
>> My personal vote is CON. No rebase hell please! Changing to the syntax
>> doesn't
>> buy us anything.
>>
>>
> CON, for all the reasons you mentioned. Also: style only changes are pain
> when you're
> trying to annotate/blame a particular line of code.
>
> ESPECIALLY for something so silly as array formatting which gains us
> *absolutely nothing*
>
> -Chad
>

I change my vote to PRO.

Mainly because people are gonna do it anyway...

Last thoughts on the thread, I got bigger fish to fry than array syntax
sugar :D

-Chad
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Re: [Wikitech-l] Mass migration to new syntax - PRO or CON?

2016-02-12 Thread Purodha Blissenbach
A quick asking around among programmers here gives 7:1 pro array() and 
con [] syntax.
The latter is seen as less readable. Is there a technical advantage of 
[] over array()

that we should harvest?

Purodha

On 12.02.2016 21:06, Ricordisamoa wrote:

Il 12/02/2016 20:26, Legoktm ha scritto:

Hi,

On 02/12/2016 07:27 AM, Daniel Kinzler wrote:
Now that we target PHP 5.5, some people are itching to make use of 
some new

language features, like the new array syntax, e.g.
.

Mass changes like this, or similar changes relating to coding 
style, tend to
lead to controversy. I want to make sure we have a discussion about 
this here,

to avoid having the argument over and over on any such patch.

Please give a quick PRO or CON response as a basis for discussion.

In essence, the discussion boils down to two conflicting positions:

PRO: do mass migration to the new syntax, style, or whatever, as 
soon as
possible. This way, the codebase is in a consistent form, and that 
form is the
one we agreed is the best for readability. Doing changes like this 
is
gratifying, because it's low hanging fruit: it's easy to do, and 
has large

visible impact (well ok, visible in the source).
I'll offer an alternative, which is to convert all of them at once 
using
PHPCS and then enforce that all new patches use [] arrays. You then 
only
have one commit which changes everything, not hundreds you have to 
go

through while git blaming or looking in git log.

CON: don't do mass migration to new syntax, only start using new 
styles and
features when touching the respective bit of code anyway. The 
argument is here
that touching many lines of code, even if it's just for whitespace 
changes,
causes merge conflicts when doing backports and when rebasing 
patches. E.g. if
we touch half the files in the codebase to change to the new array 
syntax, who
is going to manually rebase the couple of hundred patches we have 
open?

There's no need to do it manually. Just tell people to run the phpcs
autofixer before they rebase, and the result should be identical to
what's already there. And we can have PHPCS run in the other 
direction

for backports ([] -> array()).

But if we don't do that, people are going to start converting things
manually whenever they work on the code, and you'll still end up 
with

hundreds of open patches needing rebase, except it can't be done
automatically anymore.

My personal vote is CON. No rebase hell please! Changing to the 
syntax doesn't

buy us anything.
Consistency buys us a lot. New developers won't be confused on 
whether
to use [] or array(). It makes entry easier for people coming from 
other

languages where [] is used for lists.


Objection: other languages may use [] for lists, but array() is more
similar to {} used for hash tables.



I think you're going to end up in rebase hell regardless, so we 
should
rip off the bandaid quickly and get it over with, and use the 
automated

tools we have to our advantage.

So, if we're voting, I'm PRO.

-- Legoktm

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Re: [Wikitech-l] Mass migration to new syntax - PRO or CON?

2016-02-12 Thread Bryan Davis
On Fri, Feb 12, 2016 at 12:26 PM, Legoktm  wrote:
> I think you're going to end up in rebase hell regardless, so we should
> rip off the bandaid quickly and get it over with, and use the automated
> tools we have to our advantage.
>
> So, if we're voting, I'm PRO.

+2

Bryan
-- 
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[[m:User:BDavis_(WMF)]]  Sr Software EngineerBoise, ID USA
irc: bd808v:415.839.6885 x6855

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Re: [Wikitech-l] Mass migration to new syntax - PRO or CON?

2016-02-12 Thread Denny Vrandečić
Although I haven't touched MediaWiki code for a year or so, based on my
experience with large codebases with tons of contributors, I would be very
much PRO.

I understand it is a pain, but as Legoktm points out, it is a manageable
pain. Having a consistent and higher-quality code base is worth the
migration pain. Three more advantages:
* future changesets are cleaner, as one does not have to do the clean up in
addition to the actual change they wanted to do
* automatic testing tools can capture issues with a higher confidence if it
doesn't have to take historical exceptions into account
* most developers code by copy-and-paste of style, structures, and ideas.
So even if a new styleguide is in place, it can often be the case that a
developer will start building off the old styleguide as they simply keep
their code consistent with the code that they are looking at

hth


On Fri, Feb 12, 2016 at 11:57 AM Brad Jorsch (Anomie) 
wrote:

> On Fri, Feb 12, 2016 at 2:26 PM, Legoktm 
> wrote:
>
> > I think you're going to end up in rebase hell regardless, so we should
> > rip off the bandaid quickly and get it over with, and use the automated
> > tools we have to our advantage.
> >
>
> This. Just get it over with, and then it's only one patch screwing up
> rebases and blames instead of lots.
>
>
>
> --
> Brad Jorsch (Anomie)
> Senior Software Engineer
> Wikimedia Foundation
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Re: [Wikitech-l] Mass migration to new syntax - PRO or CON?

2016-02-12 Thread Jon Robson
On 12 Feb 2016 12:44 p.m., "Chad"  wrote:
>
> On Fri, Feb 12, 2016 at 9:14 AM Chad  wrote:
>
> > On Fri, Feb 12, 2016 at 7:27 AM Daniel Kinzler 
> > wrote:
> >
> >> CON: don't do mass migration to new syntax, only start using new styles
> >> and
> >> features when touching the respective bit of code anyway. The argument
is
> >> here
> >> that touching many lines of code, even if it's just for whitespace
> >> changes,
> >> causes merge conflicts when doing backports and when rebasing patches.
> >> E.g. if
> >> we touch half the files in the codebase to change to the new array
> >> syntax, who
> >> is going to manually rebase the couple of hundred patches we have open?
> >>
> >>
> >> As can be seen on the proposed patch I linked, several of the long term
> >> developers oppose mass changes like this. A quick round of feedback in
the
> >> architecture committee draws a similar picture. However, perhaps there
are
> >> compelling arguments for doing the mass migration that we haven't heard
> >> yet. So
> >> please give a quick PRO or CON, optionally with some rationale.
> >>
> >> My personal vote is CON. No rebase hell please! Changing to the syntax
> >> doesn't
> >> buy us anything.
> >>
> >>
> > CON, for all the reasons you mentioned. Also: style only changes are
pain
> > when you're
> > trying to annotate/blame a particular line of code.
> >
> > ESPECIALLY for something so silly as array formatting which gains us
> > *absolutely nothing*
> >
> > -Chad
> >
>
> I change my vote to PRO.
>
> Mainly because people are gonna do it anyway...
>
> Last thoughts on the thread, I got bigger fish to fry than array syntax
> sugar :D

PRO for me too. If we do this with automated tools we avoid the human
error. You have me convinced.

>
> -Chad
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