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etoolbox: AtBeginEnvironment is not At Begin Environment

Remove space after figure and before textSpacing around table and figure environmentsmultiple lists in etoolboxPhantom and etoolbox iftogglePackage etoolbox Warning: Patching 'begin' failed!Hide an environment and show it later in the documentetoolbox conflict with bm packageProblem changing spacing for equation environmentquestion of ifstrequal in etoolboxImage Not Found in Command with EtoolboxEnd mark switching fails because @ifnextchar's behavior in an environment hook is not as naively expectedObeylines and gappto from etoolbox

6

I tried the following MWE:

documentclass{article}

usepackage{etoolbox}



AtBeginEnvironment{table}{AtBeginEnvironmentpar}

AtEndEnvironment{table}{AtEndEnvironmentpar}

BeforeBeginEnvironment{table}{BeforeBeginEnvironmentpar}

AfterEndEnvironment{table}{AfterEndEnvironmentpar}



begin{document}

    Text beforepar

begin{table} [t]%

    Table textpar

end{table}

    Text afterpar

end{document}

and got the following result:

Table text

AtEndEnvironment

Text before

BeforeBeginEnvironment

AtBeginEnvironment

AfterEndEnvironment

Text after

I was expecting AtBeginEnvironment to travel to the top of the page together with the float.
Here is what the manual has to say on the matter:

AtBeginEnvironment{<environment>}{<code>}

Appends arbitrary <code> to a hook executed by the begin command

at the beginning of a given <environment>, immediately before

<environment>, inside the group opened by begin.

I do not know what happens inside an environment definition; I guess it declares some special commands called <environment> (e.g. table) and end<environment> (e.g. endtable).

But in this case, shouldn't it be immediately after <environment>, in order to be a complement to AtEndEnvironment just as BeforeBeginEnvironment is a complement to AfterEndEnvironment?

Anyway, how can I add code to the beginning of an environment? I'm trying to set a certain font style for all tables, and AtBeginEnvironment{table}{small} does not work. Also I guess this behavior makes this answer incorrect, because addvspace would stay at the point of declaration of the figure instead of moving together with it.

etoolbox

share|improve this question

edited 9 hours ago

ScumCoder

asked 9 hours ago

ScumCoderScumCoder

630512

add a comment | 

6

I tried the following MWE:

documentclass{article}

usepackage{etoolbox}



AtBeginEnvironment{table}{AtBeginEnvironmentpar}

AtEndEnvironment{table}{AtEndEnvironmentpar}

BeforeBeginEnvironment{table}{BeforeBeginEnvironmentpar}

AfterEndEnvironment{table}{AfterEndEnvironmentpar}



begin{document}

    Text beforepar

begin{table} [t]%

    Table textpar

end{table}

    Text afterpar

end{document}

and got the following result:

Table text

AtEndEnvironment

Text before

BeforeBeginEnvironment

AtBeginEnvironment

AfterEndEnvironment

Text after

I was expecting AtBeginEnvironment to travel to the top of the page together with the float.
Here is what the manual has to say on the matter:

AtBeginEnvironment{<environment>}{<code>}

Appends arbitrary <code> to a hook executed by the begin command

at the beginning of a given <environment>, immediately before

<environment>, inside the group opened by begin.

I do not know what happens inside an environment definition; I guess it declares some special commands called <environment> (e.g. table) and end<environment> (e.g. endtable).

But in this case, shouldn't it be immediately after <environment>, in order to be a complement to AtEndEnvironment just as BeforeBeginEnvironment is a complement to AfterEndEnvironment?

Anyway, how can I add code to the beginning of an environment? I'm trying to set a certain font style for all tables, and AtBeginEnvironment{table}{small} does not work. Also I guess this behavior makes this answer incorrect, because addvspace would stay at the point of declaration of the figure instead of moving together with it.

etoolbox

share|improve this question

edited 9 hours ago

ScumCoder

asked 9 hours ago

ScumCoderScumCoder

630512

add a comment | 

I tried the following MWE:

documentclass{article}

usepackage{etoolbox}



AtBeginEnvironment{table}{AtBeginEnvironmentpar}

AtEndEnvironment{table}{AtEndEnvironmentpar}

BeforeBeginEnvironment{table}{BeforeBeginEnvironmentpar}

AfterEndEnvironment{table}{AfterEndEnvironmentpar}



begin{document}

    Text beforepar

begin{table} [t]%

    Table textpar

end{table}

    Text afterpar

end{document}

and got the following result:

Table text

AtEndEnvironment

Text before

BeforeBeginEnvironment

AtBeginEnvironment

AfterEndEnvironment

Text after

I was expecting AtBeginEnvironment to travel to the top of the page together with the float.
Here is what the manual has to say on the matter:

AtBeginEnvironment{<environment>}{<code>}

Appends arbitrary <code> to a hook executed by the begin command

at the beginning of a given <environment>, immediately before

<environment>, inside the group opened by begin.

I do not know what happens inside an environment definition; I guess it declares some special commands called <environment> (e.g. table) and end<environment> (e.g. endtable).

But in this case, shouldn't it be immediately after <environment>, in order to be a complement to AtEndEnvironment just as BeforeBeginEnvironment is a complement to AfterEndEnvironment?

Anyway, how can I add code to the beginning of an environment? I'm trying to set a certain font style for all tables, and AtBeginEnvironment{table}{small} does not work. Also I guess this behavior makes this answer incorrect, because addvspace would stay at the point of declaration of the figure instead of moving together with it.

etoolbox

share|improve this question

edited 9 hours ago

ScumCoder

asked 9 hours ago

ScumCoderScumCoder

630512

documentclass{article}

usepackage{etoolbox}



AtBeginEnvironment{table}{AtBeginEnvironmentpar}

AtEndEnvironment{table}{AtEndEnvironmentpar}

BeforeBeginEnvironment{table}{BeforeBeginEnvironmentpar}

AfterEndEnvironment{table}{AfterEndEnvironmentpar}



begin{document}

    Text beforepar

begin{table} [t]%

    Table textpar

end{table}

    Text afterpar

end{document}

Table text

AtEndEnvironment

Text before

BeforeBeginEnvironment

AtBeginEnvironment

AfterEndEnvironment

Text after

AtBeginEnvironment{<environment>}{<code>}

Appends arbitrary <code> to a hook executed by the begin command

at the beginning of a given <environment>, immediately before

<environment>, inside the group opened by begin.

share|improve this question

edited 9 hours ago

ScumCoder

asked 9 hours ago

ScumCoderScumCoder

630512

share|improve this question

edited 9 hours ago

ScumCoder

asked 9 hours ago

ScumCoderScumCoder

630512

asked 9 hours ago

ScumCoderScumCoder

630512

asked 9 hours ago

ScumCoderScumCoder

630512

1 Answer
1

active

oldest

votes

8

The etoolbox package redefines begin so that

1. 
   @beforebegin@<envname>@hook is executed


2. the usual bookkeeping is performed (setting @currenvir, for instance)


3. 
   @begin@<envname>@hook is executed
   1 a group is started


4. the macro <envname> is executed

Thus what you get is

@beforebegin@table@hook

<bookkeeping>

@begin@table@hook

begingroup

table

The macro table is responsible for starting the creation of a float and expands to @float{table}.

Thus the tokens AtBeginEnvironmentpar and BeforeBeginEnvironmentpar are seen and the paragraphs are typeset before the float is started.

To the contrary, end is redefined to execute the AtEndEnvironment tokens before end<envname> is executed.

This should explain the output you get.

There is a hook for doing things when the float has already begun and is @floatboxreset.

I would be wary of using the hooks for adding text: they're meant for additional setup.

share|improve this answer

answered 9 hours ago

egregegreg

745k8919493288

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @begin@table@hook isn't inside the group?
  
  – touhami
  9 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thank you. > I would be wary of using the hooks for adding text: they're meant for additional setup. I'm wary too, I just used it to see what goes where. > There is a hook for doing things when the float has already begun and is @floatboxreset. That’s helpful, but alas, it does not allow to set different settings for different float types.
  
  – ScumCoder
  9 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Also, I must add that I ended up using setfloatadjustment command from memoir, on which I stumbled upon when I read your answer and started digging the @floatboxreset.
  
  – ScumCoder
  8 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @ScumCoder you can put float-type specific code in @floatboxreset you just need to test @captype
  
  – David Carlisle
  8 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @DavidCarlisle I'm afraid this is a bit too hardcore for me yet, I'll just settle for something more philistine for the time being :)
  
  – ScumCoder
  8 hours ago
  

  
  
  
  

add a comment | 

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8

The etoolbox package redefines begin so that

1. 
   @beforebegin@<envname>@hook is executed


2. the usual bookkeeping is performed (setting @currenvir, for instance)


3. 
   @begin@<envname>@hook is executed
   1 a group is started


4. the macro <envname> is executed

Thus what you get is

@beforebegin@table@hook

<bookkeeping>

@begin@table@hook

begingroup

table

The macro table is responsible for starting the creation of a float and expands to @float{table}.

Thus the tokens AtBeginEnvironmentpar and BeforeBeginEnvironmentpar are seen and the paragraphs are typeset before the float is started.

To the contrary, end is redefined to execute the AtEndEnvironment tokens before end<envname> is executed.

This should explain the output you get.

There is a hook for doing things when the float has already begun and is @floatboxreset.

I would be wary of using the hooks for adding text: they're meant for additional setup.

share|improve this answer

answered 9 hours ago

egregegreg

745k8919493288

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @begin@table@hook isn't inside the group?
  
  – touhami
  9 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thank you. > I would be wary of using the hooks for adding text: they're meant for additional setup. I'm wary too, I just used it to see what goes where. > There is a hook for doing things when the float has already begun and is @floatboxreset. That’s helpful, but alas, it does not allow to set different settings for different float types.
  
  – ScumCoder
  9 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Also, I must add that I ended up using setfloatadjustment command from memoir, on which I stumbled upon when I read your answer and started digging the @floatboxreset.
  
  – ScumCoder
  8 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @ScumCoder you can put float-type specific code in @floatboxreset you just need to test @captype
  
  – David Carlisle
  8 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @DavidCarlisle I'm afraid this is a bit too hardcore for me yet, I'll just settle for something more philistine for the time being :)
  
  – ScumCoder
  8 hours ago
  

  
  
  
  

add a comment | 

8

The etoolbox package redefines begin so that

1. 
   @beforebegin@<envname>@hook is executed


2. the usual bookkeeping is performed (setting @currenvir, for instance)


3. 
   @begin@<envname>@hook is executed
   1 a group is started


4. the macro <envname> is executed

Thus what you get is

@beforebegin@table@hook

<bookkeeping>

@begin@table@hook

begingroup

table

The macro table is responsible for starting the creation of a float and expands to @float{table}.

Thus the tokens AtBeginEnvironmentpar and BeforeBeginEnvironmentpar are seen and the paragraphs are typeset before the float is started.

To the contrary, end is redefined to execute the AtEndEnvironment tokens before end<envname> is executed.

This should explain the output you get.

There is a hook for doing things when the float has already begun and is @floatboxreset.

I would be wary of using the hooks for adding text: they're meant for additional setup.

share|improve this answer

answered 9 hours ago

egregegreg

745k8919493288

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @begin@table@hook isn't inside the group?
  
  – touhami
  9 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thank you. > I would be wary of using the hooks for adding text: they're meant for additional setup. I'm wary too, I just used it to see what goes where. > There is a hook for doing things when the float has already begun and is @floatboxreset. That’s helpful, but alas, it does not allow to set different settings for different float types.
  
  – ScumCoder
  9 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Also, I must add that I ended up using setfloatadjustment command from memoir, on which I stumbled upon when I read your answer and started digging the @floatboxreset.
  
  – ScumCoder
  8 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @ScumCoder you can put float-type specific code in @floatboxreset you just need to test @captype
  
  – David Carlisle
  8 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @DavidCarlisle I'm afraid this is a bit too hardcore for me yet, I'll just settle for something more philistine for the time being :)
  
  – ScumCoder
  8 hours ago
  

  
  
  
  

add a comment | 

The etoolbox package redefines begin so that

1. 
   @beforebegin@<envname>@hook is executed


2. the usual bookkeeping is performed (setting @currenvir, for instance)


3. 
   @begin@<envname>@hook is executed
   1 a group is started


4. the macro <envname> is executed

Thus what you get is

@beforebegin@table@hook

<bookkeeping>

@begin@table@hook

begingroup

table

The macro table is responsible for starting the creation of a float and expands to @float{table}.

Thus the tokens AtBeginEnvironmentpar and BeforeBeginEnvironmentpar are seen and the paragraphs are typeset before the float is started.

To the contrary, end is redefined to execute the AtEndEnvironment tokens before end<envname> is executed.

This should explain the output you get.

There is a hook for doing things when the float has already begun and is @floatboxreset.

I would be wary of using the hooks for adding text: they're meant for additional setup.

share|improve this answer

answered 9 hours ago

egregegreg

745k8919493288

@beforebegin@table@hook

<bookkeeping>

@begin@table@hook

begingroup

table

share|improve this answer

answered 9 hours ago

egregegreg

745k8919493288

answered 9 hours ago

egregegreg

745k8919493288

answered 9 hours ago

egregegreg

745k8919493288