Using \overloaded
Hans and all, Preparing my standard environments for future strict enforcement of overloading prevention, I have run into one issue. I had been using the following construction to change the formatting of URLs: \let\OrigHyphenatedurl\hyphenatedurl \starttexdefinition hyphenatedurl #URL \begingroup \URLfont\OrigHyphenatedurl{#URL} \endgroup \stoptexdefinition This results in the following warning about overloading \hyphenatedurl: csname overload > warning, protection level 3, control sequence 'hyphenatedurl', properties 'permanent protected', file 'env_layout.mkvi', line 1 I have tried adding \overloaded to indicate the intentional overloading, but \overloaded cannot be used with \starttexdefinition, so I rewrote it as: \let\OrigHyphenatedurl\hyphenatedurl \overloaded\define[1]\hyphenatedurl{% \begingroup% \URLfont\OrigHyphenatedurl{#1}% \endgroup}% but that (and also with \overloaded\def\hyphenatedurl#1...) gives the same (except for the line number) warning: csname overload > warning, protection level 3, control sequence 'hyphenatedurl', properties 'permanent protected', file 'env_layout.mkvi', line 822 So, what is the proper way to indicate intentional overloading? Or should this redefinition be done in another way? (Also, it is interesting that the line number in the first warning message does not point to the actual line.) -- Rik
Rik Kabel schrieb am 24.01.2021 um 05:13:
Hans and all,
Preparing my standard environments for future strict enforcement of overloading prevention, I have run into one issue.
I had been using the following construction to change the formatting of URLs:
\let\OrigHyphenatedurl\hyphenatedurl \starttexdefinition hyphenatedurl #URL \begingroup \URLfont\OrigHyphenatedurl{#URL} \endgroup \stoptexdefinition
You can use a hook to change the font for \hyphenatedurl. \starttext \hyphenatedurl{https://wiki.contextgarden.net/Main_Page} \appendtoks \it \to \everyhyphenatedurl \hyphenatedurl{https://wiki.contextgarden.net/Main_Page} \stoptext
This results in the following warning about overloading \hyphenatedurl:
csname overload > warning, protection level 3, control sequence 'hyphenatedurl', properties 'permanent protected', file 'env_layout.mkvi', line 1
I have tried adding \overloaded to indicate the intentional overloading, but \overloaded cannot be used with \starttexdefinition, so I rewrote it as:
\let\OrigHyphenatedurl\hyphenatedurl \overloaded\define[1]\hyphenatedurl{% \begingroup% \URLfont\OrigHyphenatedurl{#1}% \endgroup}%
but that (and also with \overloaded\def\hyphenatedurl#1...) gives the same (except for the line number) warning:
csname overload > warning, protection level 3, control sequence 'hyphenatedurl', properties 'permanent protected', file 'env_layout.mkvi', line 822
So, what is the proper way to indicate intentional overloading? Or should this redefinition be done in another way?
The best solution is *to not* overload commands because there are either alternative ways to achieve the desired result or other commands which can be used. \overloadmode=4 \starttext \permanent\def\mycommand#1{[#1]} \mycommand{Old definition} \pushoverloadmode \aliased\let\originalmycommand\mycommand \permanent\def\mycommand#1% {{\it\originalmycommand{#1}}} \popoverloadmode \mycommand{New definition} \stoptext Wolfgang
On 1/24/2021 04:33, Wolfgang Schuster wrote:
Rik Kabel schrieb am 24.01.2021 um 05:13:
Hans and all,
Preparing my standard environments for future strict enforcement of overloading prevention, I have run into one issue.
I had been using the following construction to change the formatting of URLs:
\let\OrigHyphenatedurl\hyphenatedurl \starttexdefinition hyphenatedurl #URL \begingroup \URLfont\OrigHyphenatedurl{#URL} \endgroup \stoptexdefinition
You can use a hook to change the font for \hyphenatedurl.
\starttext
\hyphenatedurl{https://wiki.contextgarden.net/Main_Page}
\appendtoks \it \to \everyhyphenatedurl
\hyphenatedurl{https://wiki.contextgarden.net/Main_Page}
\stoptext
This results in the following warning about overloading \hyphenatedurl:
csname overload > warning, protection level 3, control sequence 'hyphenatedurl', properties 'permanent protected', file 'env_layout.mkvi', line 1
I have tried adding \overloaded to indicate the intentional overloading, but \overloaded cannot be used with \starttexdefinition, so I rewrote it as:
\let\OrigHyphenatedurl\hyphenatedurl \overloaded\define[1]\hyphenatedurl{% \begingroup% \URLfont\OrigHyphenatedurl{#1}% \endgroup}%
but that (and also with \overloaded\def\hyphenatedurl#1...) gives the same (except for the line number) warning:
csname overload > warning, protection level 3, control sequence 'hyphenatedurl', properties 'permanent protected', file 'env_layout.mkvi', line 822
So, what is the proper way to indicate intentional overloading? Or should this redefinition be done in another way?
The best solution is *to not* overload commands because there are either alternative ways to achieve the desired result or other commands which can be used.
\overloadmode=4
\starttext
\permanent\def\mycommand#1{[#1]}
\mycommand{Old definition}
\pushoverloadmode
\aliased\let\originalmycommand\mycommand
\permanent\def\mycommand#1% {{\it\originalmycommand{#1}}}
\popoverloadmode
\mycommand{New definition}
\stoptext
Wolfgang
Thank you, Wolfgang (and Hans), The hook is perfect for this. I had avoided that construction for a long time thinking that it is too low-level, but looking at it again it seems to be the right thing here. I can find no information on \aliased and the push/pop for overloademode and such, so will leave documenting that in the wiki to somebody with a few more clues. -- Rik
Hi, Rik. If it helps, flags are explained in lowlevel-security manual: https://www.pragma-ade.com/general/manuals/lowlevel-security.pdf Jairo :) El dom, 24 de ene. de 2021 a la(s) 16:16, Rik Kabel ( ConTeXt@rik.users.panix.com) escribió:
On 1/24/2021 04:33, Wolfgang Schuster wrote:
Rik Kabel schrieb am 24.01.2021 um 05:13:
Hans and all,
Preparing my standard environments for future strict enforcement of overloading prevention, I have run into one issue.
I had been using the following construction to change the formatting of URLs:
\let\OrigHyphenatedurl\hyphenatedurl \starttexdefinition hyphenatedurl #URL \begingroup \URLfont\OrigHyphenatedurl{#URL} \endgroup \stoptexdefinition
You can use a hook to change the font for \hyphenatedurl.
\starttext
\hyphenatedurl{https://wiki.contextgarden.net/Main_Page}
\appendtoks \it \to \everyhyphenatedurl
\hyphenatedurl{https://wiki.contextgarden.net/Main_Page}
\stoptext
This results in the following warning about overloading \hyphenatedurl:
csname overload > warning, protection level 3, control sequence 'hyphenatedurl', properties 'permanent protected', file 'env_layout.mkvi', line 1
I have tried adding \overloaded to indicate the intentional overloading, but \overloaded cannot be used with \starttexdefinition, so I rewrote it as:
\let\OrigHyphenatedurl\hyphenatedurl \overloaded\define[1]\hyphenatedurl{% \begingroup% \URLfont\OrigHyphenatedurl{#1}% \endgroup}%
but that (and also with \overloaded\def\hyphenatedurl#1...) gives the same (except for the line number) warning:
csname overload > warning, protection level 3, control sequence 'hyphenatedurl', properties 'permanent protected', file 'env_layout.mkvi', line 822
So, what is the proper way to indicate intentional overloading? Or should this redefinition be done in another way?
The best solution is *to not* overload commands because there are either alternative ways to achieve the desired result or other commands which can be used.
\overloadmode=4
\starttext
\permanent\def\mycommand#1{[#1]}
\mycommand{Old definition}
\pushoverloadmode
\aliased\let\originalmycommand\mycommand
\permanent\def\mycommand#1% {{\it\originalmycommand{#1}}}
\popoverloadmode
\mycommand{New definition}
\stoptext
Wolfgang
Thank you, Wolfgang (and Hans),
The hook is perfect for this. I had avoided that construction for a long time thinking that it is too low-level, but looking at it again it seems to be the right thing here.
I can find no information on \aliased and the push/pop for overloademode and such, so will leave documenting that in the wiki to somebody with a few more clues.
-- Rik
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On 1/24/2021 10:16 PM, Rik Kabel wrote:
I can find no information on \aliased and the push/pop for overloademode and such, so will leave documenting that in the wiki to somebody with a few more clues. it will be (and often is) in documentation and manuals in the distribution and in articles in user group journals and so
but anyway it's kind of new and i still need to flag all visible (low level) macros and variables (still some 700 to go) the same is also done for metafun (mostly done but also some to go) it roughly works as follows: - primitives are marked as 'primitive' (already by the engine) - we mark all registers we allocate as 'permanent' - most constants are marked as 'immutable' - if we don't care (or can't) we mark something as 'mutable' - user defined instances are 'frozen' (can be \overloaded) - \aliased just means: take the properties (applies to \let cs) - \enforced (in the body of a macro) does just that the last one is special because it gets internalized in ini mode (when the format is made) there are (and might be some more) flags (like \noaligned) the other large effort is removing some indirectness (using the extended lightweight macro argument parsing features) (mostly done, but it can introduce issues due to the rather large amount of tiny adptions but luckily these are reported here by users) anyway, what happens after that depends on \overloadmode (th ehigher the more strict, odd a warning, even an error) it is not (and can never be) complete in terms of protection (too many macro definitions, also runtime) but good enough for what i have in mind: help users to keep their run working by not redefining essential macros Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl -----------------------------------------------------------------
On 1/24/2021 5:13 AM, Rik Kabel wrote:
Hans and all,
Preparing my standard environments for future strict enforcement of overloading prevention, I have run into one issue.
I had been using the following construction to change the formatting of URLs:
\let\OrigHyphenatedurl\hyphenatedurl \starttexdefinition hyphenatedurl #URL \begingroup \URLfont\OrigHyphenatedurl{#URL} \endgroup \stoptexdefinition
This results in the following warning about overloading \hyphenatedurl:
csname overload > warning, protection level 3, control sequence 'hyphenatedurl', properties 'permanent protected', file 'env_layout.mkvi', line 1
I have tried adding \overloaded to indicate the intentional overloading, but \overloaded cannot be used with \starttexdefinition, so I rewrote it as:
\let\OrigHyphenatedurl\hyphenatedurl \overloaded\define[1]\hyphenatedurl{% \begingroup% \URLfont\OrigHyphenatedurl{#1}% \endgroup}%
but that (and also with \overloaded\def\hyphenatedurl#1...) gives the same (except for the line number) warning:
csname overload > warning, protection level 3, control sequence 'hyphenatedurl', properties 'permanent protected', file 'env_layout.mkvi', line 822
So, what is the proper way to indicate intentional overloading? Or should this redefinition be done in another way?
(Also, it is interesting that the line number in the first warning message does not point to the actual line.)
\pushoverloadmode ... \popoverloadmode that has ot do with whne an error is encountered not where it originates from Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl -----------------------------------------------------------------
participants (4)
-
Hans Hagen -
Jairo A. del Rio -
Rik Kabel -
Wolfgang Schuster