How to use @ifnextchar to create a “table of references” macro?

Clash Royale CLAN TAG#URR8PPP

up vote
2
down vote

favorite

At the bottom of every section in a big policy manual I need to include a table of references to a procedures manual like this:

begintable[H]
begintabular 
 hline
 multicolumn2Procedures \
 hline
 %fyi PM = Procedures Manual
 PM refPM-tyinglaces & namerefPM-tyinglaces \ 
 PM ref{PM-polishshoes & namerefPM-polishshoes \
 PM refPM-ironshirt & namerefPM-ironshirt \
 hline
endtabular
endtable

Of course since every table is formatted the same I'd really like a macro with syntax similar to:

%procedurelistfirstlabelnextlabel...nthlabel
%
procedurelistPM-tyinglacesPM-polishshoesPM-ironshirt

A single comma deliminated parameter would be okay too. My attempt is found below. I just can't get it to close the table, somehow it breaks when I include the closing hline.

makeatletter
newcommandprocedurelist[1]%
 begintable[H]
 begintabular 
 hline
 multicolumn2Procedures \
 hline
 PM ref#1 & nameref#1 \%
 checknextarg

newcommandchecknextarg%
 @ifnextcharbgroup%
 consumenextarg
 %
 hline %causes error?
 endtabular
 endtable
 

newcommandconsumenextarg[1]%
 PM ref#1 & nameref#1 \%
 @ifnextcharbgroup%
 consumenextarg
 %
 hline %causes error?
 endtabular
 endtable
 

makeatother

How do I achieve my goal?

What am I doing wrong in my macro?

recursion

share|improve this question

asked 1 hour ago

KJC

603

• 
  
  
  

  
  

  
  
  
  
  
  

  
  The error of the hline is caused because you used checknextarg which isn't expandable as it uses @ifnextchar which is not expandable. Then you want to issue a noalign which is not the first token in that row.
  – Skillmon
  32 mins ago
  

  
  
  
  

add a comment | 

up vote
2
down vote

favorite

At the bottom of every section in a big policy manual I need to include a table of references to a procedures manual like this:

begintable[H]
begintabular 
 hline
 multicolumn2Procedures \
 hline
 %fyi PM = Procedures Manual
 PM refPM-tyinglaces & namerefPM-tyinglaces \ 
 PM ref{PM-polishshoes & namerefPM-polishshoes \
 PM refPM-ironshirt & namerefPM-ironshirt \
 hline
endtabular
endtable

Of course since every table is formatted the same I'd really like a macro with syntax similar to:

%procedurelistfirstlabelnextlabel...nthlabel
%
procedurelistPM-tyinglacesPM-polishshoesPM-ironshirt

A single comma deliminated parameter would be okay too. My attempt is found below. I just can't get it to close the table, somehow it breaks when I include the closing hline.

makeatletter
newcommandprocedurelist[1]%
 begintable[H]
 begintabular 
 hline
 multicolumn2Procedures \
 hline
 PM ref#1 & nameref#1 \%
 checknextarg

newcommandchecknextarg%
 @ifnextcharbgroup%
 consumenextarg
 %
 hline %causes error?
 endtabular
 endtable
 

newcommandconsumenextarg[1]%
 PM ref#1 & nameref#1 \%
 @ifnextcharbgroup%
 consumenextarg
 %
 hline %causes error?
 endtabular
 endtable
 

makeatother

How do I achieve my goal?

What am I doing wrong in my macro?

recursion

share|improve this question

asked 1 hour ago

KJC

603

• 
  
  
  

  
  

  
  
  
  
  
  

  
  The error of the hline is caused because you used checknextarg which isn't expandable as it uses @ifnextchar which is not expandable. Then you want to issue a noalign which is not the first token in that row.
  – Skillmon
  32 mins ago
  

  
  
  
  

add a comment | 

up vote
2
down vote

favorite

up vote
2
down vote

favorite

At the bottom of every section in a big policy manual I need to include a table of references to a procedures manual like this:

begintable[H]
begintabular 
 hline
 multicolumn2Procedures \
 hline
 %fyi PM = Procedures Manual
 PM refPM-tyinglaces & namerefPM-tyinglaces \ 
 PM ref{PM-polishshoes & namerefPM-polishshoes \
 PM refPM-ironshirt & namerefPM-ironshirt \
 hline
endtabular
endtable

Of course since every table is formatted the same I'd really like a macro with syntax similar to:

%procedurelistfirstlabelnextlabel...nthlabel
%
procedurelistPM-tyinglacesPM-polishshoesPM-ironshirt

A single comma deliminated parameter would be okay too. My attempt is found below. I just can't get it to close the table, somehow it breaks when I include the closing hline.

makeatletter
newcommandprocedurelist[1]%
 begintable[H]
 begintabular 
 hline
 multicolumn2Procedures \
 hline
 PM ref#1 & nameref#1 \%
 checknextarg

newcommandchecknextarg%
 @ifnextcharbgroup%
 consumenextarg
 %
 hline %causes error?
 endtabular
 endtable
 

newcommandconsumenextarg[1]%
 PM ref#1 & nameref#1 \%
 @ifnextcharbgroup%
 consumenextarg
 %
 hline %causes error?
 endtabular
 endtable
 

makeatother

How do I achieve my goal?

What am I doing wrong in my macro?

recursion

share|improve this question

asked 1 hour ago

KJC

603

At the bottom of every section in a big policy manual I need to include a table of references to a procedures manual like this:

begintable[H]
begintabular 
 hline
 multicolumn2Procedures \
 hline
 %fyi PM = Procedures Manual
 PM refPM-tyinglaces & namerefPM-tyinglaces \ 
 PM ref{PM-polishshoes & namerefPM-polishshoes \
 PM refPM-ironshirt & namerefPM-ironshirt \
 hline
endtabular
endtable

Of course since every table is formatted the same I'd really like a macro with syntax similar to:

%procedurelistfirstlabelnextlabel...nthlabel
%
procedurelistPM-tyinglacesPM-polishshoesPM-ironshirt

A single comma deliminated parameter would be okay too. My attempt is found below. I just can't get it to close the table, somehow it breaks when I include the closing hline.

makeatletter
newcommandprocedurelist[1]%
 begintable[H]
 begintabular 
 hline
 multicolumn2Procedures \
 hline
 PM ref#1 & nameref#1 \%
 checknextarg

newcommandchecknextarg%
 @ifnextcharbgroup%
 consumenextarg
 %
 hline %causes error?
 endtabular
 endtable
 

newcommandconsumenextarg[1]%
 PM ref#1 & nameref#1 \%
 @ifnextcharbgroup%
 consumenextarg
 %
 hline %causes error?
 endtabular
 endtable
 

makeatother

How do I achieve my goal?

What am I doing wrong in my macro?

recursion

recursion

share|improve this question

asked 1 hour ago

KJC

603

share|improve this question

asked 1 hour ago

KJC

603

share|improve this question

share|improve this question

asked 1 hour ago

KJC

603

asked 1 hour ago

KJC

603

asked 1 hour ago

KJC

603

603

• 
  
  
  

  
  

  
  
  
  
  
  

  
  The error of the hline is caused because you used checknextarg which isn't expandable as it uses @ifnextchar which is not expandable. Then you want to issue a noalign which is not the first token in that row.
  – Skillmon
  32 mins ago
  

  
  
  
  

add a comment | 

• 
  
  
  

  
  

  
  
  
  
  
  

  
  The error of the hline is caused because you used checknextarg which isn't expandable as it uses @ifnextchar which is not expandable. Then you want to issue a noalign which is not the first token in that row.
  – Skillmon
  32 mins ago
  

  
  
  
  

The error of the hline is caused because you used checknextarg which isn't expandable as it uses @ifnextchar which is not expandable. Then you want to issue a noalign which is not the first token in that row.
– Skillmon
32 mins ago

The error of the hline is caused because you used checknextarg which isn't expandable as it uses @ifnextchar which is not expandable. Then you want to issue a noalign which is not the first token in that row.
– Skillmon
32 mins ago

add a comment | 

2 Answers
2

active

oldest

votes

up vote
2
down vote

The trick is to first grab all those arguments and store them somewhere (here in procedurelist@content). After you grabbed all arguments you can then output the formatted table. This way you don't have any unexpandable tests inside of the table blocking any noaligns.

Example code (I removed the namerefs and the surrounding table as that doesn't make sense if the only allowed placement is H and you don't use a caption):

documentclassarticle

makeatletter
newcommand*procedurelist@content
newcommand*procedurelist@checknext
 %
 @ifnextcharbgroup
 procedurelist@eatnext
 procedurelist@shipout%
 
newcommandprocedurelist[1]
 %
 begingroup
 defprocedurelist@contentPM ref#1 & #1 \%
 procedurelist@checknext
 
newcommandprocedurelist@eatnext[1]
 %
 edefprocedurelist@content
 unexpandedexpandafterprocedurelist@content PM ref#1 & #1 \%
 procedurelist@checknext
 
newcommand*procedurelist@shipout
 %
 begintabular
 hline
 multicolumn2Procedures \
 hline
 procedurelist@content
 hline
 endtabular%
 endgroup
 
makeatother

begindocument
procedurelistarg1arg2arg3arg4
enddocument

share|improve this answer

answered 24 mins ago

Skillmon

17.7k11535

add a comment | 

up vote
1
down vote

This is possible with expl3, which already has features for processing comma separated lists and cycling over them.

documentclassarticle
usepackagexparse
usepackagehyperref

ExplSyntaxOn

NewDocumentCommandprocedurelistm
 
 seq_clear:N l__kjc_procedurelist_seq
 clist_map_inline:nn #1 
 
 seq_put_right:Nn l__kjc_procedurelist_seq
 
 PM~ref##1 & nameref##1
 
 
 begintabular
 hline
 seq_use:Nn l__kjc_procedurelist_seq \ \
 hline
 endtabular
 

seq_new:N l__kjc_procedurelist_seq

ExplSyntaxOff

begindocument

sectionTie laceslabelPM-tyinglaces
sectionPolish shoeslabelPM-polishshoes
sectionIron shirtlabelPM-ironshirt

sectionEnd

procedurelistPM-tyinglaces,PM-polishshoes,PM-ironshirt 

enddocument

A better table:

documentclassarticle
usepackagexparse,booktabs
usepackagehyperref

ExplSyntaxOn

NewDocumentCommandprocedurelistm
 
 seq_clear:N l__kjc_procedurelist_seq
 clist_map_inline:nn #1 
 
 seq_put_right:Nn l__kjc_procedurelist_seq
 
 ref##1 & nameref##1
 
 
 begintabularcl
 toprule
 multicolumn1ctextbfPM & textbfName \
 midrule
 seq_use:Nn l__kjc_procedurelist_seq \ \
 bottomrule
 endtabular
 

seq_new:N l__kjc_procedurelist_seq

ExplSyntaxOff

begindocument

sectionTie laceslabelPM-tyinglaces
sectionPolish shoeslabelPM-polishshoes
sectionIron shirtlabelPM-ironshirt

sectionEnd

procedurelistPM-tyinglaces,PM-polishshoes,PM-ironshirt 

enddocument

share|improve this answer

answered 17 mins ago

egreg

683k8418183064

add a comment | 

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2 Answers
2

active

oldest

votes

2 Answers
2

active

oldest

votes

active

oldest

votes

active

oldest

votes

up vote
2
down vote

The trick is to first grab all those arguments and store them somewhere (here in procedurelist@content). After you grabbed all arguments you can then output the formatted table. This way you don't have any unexpandable tests inside of the table blocking any noaligns.

Example code (I removed the namerefs and the surrounding table as that doesn't make sense if the only allowed placement is H and you don't use a caption):

documentclassarticle

makeatletter
newcommand*procedurelist@content
newcommand*procedurelist@checknext
 %
 @ifnextcharbgroup
 procedurelist@eatnext
 procedurelist@shipout%
 
newcommandprocedurelist[1]
 %
 begingroup
 defprocedurelist@contentPM ref#1 & #1 \%
 procedurelist@checknext
 
newcommandprocedurelist@eatnext[1]
 %
 edefprocedurelist@content
 unexpandedexpandafterprocedurelist@content PM ref#1 & #1 \%
 procedurelist@checknext
 
newcommand*procedurelist@shipout
 %
 begintabular
 hline
 multicolumn2Procedures \
 hline
 procedurelist@content
 hline
 endtabular%
 endgroup
 
makeatother

begindocument
procedurelistarg1arg2arg3arg4
enddocument

share|improve this answer

answered 24 mins ago

Skillmon

17.7k11535

add a comment | 

up vote
2
down vote

The trick is to first grab all those arguments and store them somewhere (here in procedurelist@content). After you grabbed all arguments you can then output the formatted table. This way you don't have any unexpandable tests inside of the table blocking any noaligns.

Example code (I removed the namerefs and the surrounding table as that doesn't make sense if the only allowed placement is H and you don't use a caption):

documentclassarticle

makeatletter
newcommand*procedurelist@content
newcommand*procedurelist@checknext
 %
 @ifnextcharbgroup
 procedurelist@eatnext
 procedurelist@shipout%
 
newcommandprocedurelist[1]
 %
 begingroup
 defprocedurelist@contentPM ref#1 & #1 \%
 procedurelist@checknext
 
newcommandprocedurelist@eatnext[1]
 %
 edefprocedurelist@content
 unexpandedexpandafterprocedurelist@content PM ref#1 & #1 \%
 procedurelist@checknext
 
newcommand*procedurelist@shipout
 %
 begintabular
 hline
 multicolumn2Procedures \
 hline
 procedurelist@content
 hline
 endtabular%
 endgroup
 
makeatother

begindocument
procedurelistarg1arg2arg3arg4
enddocument

share|improve this answer

answered 24 mins ago

Skillmon

17.7k11535

add a comment | 

up vote
2
down vote

up vote
2
down vote

The trick is to first grab all those arguments and store them somewhere (here in procedurelist@content). After you grabbed all arguments you can then output the formatted table. This way you don't have any unexpandable tests inside of the table blocking any noaligns.

Example code (I removed the namerefs and the surrounding table as that doesn't make sense if the only allowed placement is H and you don't use a caption):

documentclassarticle

makeatletter
newcommand*procedurelist@content
newcommand*procedurelist@checknext
 %
 @ifnextcharbgroup
 procedurelist@eatnext
 procedurelist@shipout%
 
newcommandprocedurelist[1]
 %
 begingroup
 defprocedurelist@contentPM ref#1 & #1 \%
 procedurelist@checknext
 
newcommandprocedurelist@eatnext[1]
 %
 edefprocedurelist@content
 unexpandedexpandafterprocedurelist@content PM ref#1 & #1 \%
 procedurelist@checknext
 
newcommand*procedurelist@shipout
 %
 begintabular
 hline
 multicolumn2Procedures \
 hline
 procedurelist@content
 hline
 endtabular%
 endgroup
 
makeatother

begindocument
procedurelistarg1arg2arg3arg4
enddocument

share|improve this answer

answered 24 mins ago

Skillmon

17.7k11535

The trick is to first grab all those arguments and store them somewhere (here in procedurelist@content). After you grabbed all arguments you can then output the formatted table. This way you don't have any unexpandable tests inside of the table blocking any noaligns.

Example code (I removed the namerefs and the surrounding table as that doesn't make sense if the only allowed placement is H and you don't use a caption):

documentclassarticle

makeatletter
newcommand*procedurelist@content
newcommand*procedurelist@checknext
 %
 @ifnextcharbgroup
 procedurelist@eatnext
 procedurelist@shipout%
 
newcommandprocedurelist[1]
 %
 begingroup
 defprocedurelist@contentPM ref#1 & #1 \%
 procedurelist@checknext
 
newcommandprocedurelist@eatnext[1]
 %
 edefprocedurelist@content
 unexpandedexpandafterprocedurelist@content PM ref#1 & #1 \%
 procedurelist@checknext
 
newcommand*procedurelist@shipout
 %
 begintabular
 hline
 multicolumn2Procedures \
 hline
 procedurelist@content
 hline
 endtabular%
 endgroup
 
makeatother

begindocument
procedurelistarg1arg2arg3arg4
enddocument

share|improve this answer

answered 24 mins ago

Skillmon

17.7k11535

share|improve this answer

share|improve this answer

answered 24 mins ago

Skillmon

17.7k11535

answered 24 mins ago

Skillmon

17.7k11535

answered 24 mins ago

Skillmon

17.7k11535

17.7k11535

add a comment | 

add a comment | 

up vote
1
down vote

This is possible with expl3, which already has features for processing comma separated lists and cycling over them.

documentclassarticle
usepackagexparse
usepackagehyperref

ExplSyntaxOn

NewDocumentCommandprocedurelistm
 
 seq_clear:N l__kjc_procedurelist_seq
 clist_map_inline:nn #1 
 
 seq_put_right:Nn l__kjc_procedurelist_seq
 
 PM~ref##1 & nameref##1
 
 
 begintabular
 hline
 seq_use:Nn l__kjc_procedurelist_seq \ \
 hline
 endtabular
 

seq_new:N l__kjc_procedurelist_seq

ExplSyntaxOff

begindocument

sectionTie laceslabelPM-tyinglaces
sectionPolish shoeslabelPM-polishshoes
sectionIron shirtlabelPM-ironshirt

sectionEnd

procedurelistPM-tyinglaces,PM-polishshoes,PM-ironshirt 

enddocument

A better table:

documentclassarticle
usepackagexparse,booktabs
usepackagehyperref

ExplSyntaxOn

NewDocumentCommandprocedurelistm
 
 seq_clear:N l__kjc_procedurelist_seq
 clist_map_inline:nn #1 
 
 seq_put_right:Nn l__kjc_procedurelist_seq
 
 ref##1 & nameref##1
 
 
 begintabularcl
 toprule
 multicolumn1ctextbfPM & textbfName \
 midrule
 seq_use:Nn l__kjc_procedurelist_seq \ \
 bottomrule
 endtabular
 

seq_new:N l__kjc_procedurelist_seq

ExplSyntaxOff

begindocument

sectionTie laceslabelPM-tyinglaces
sectionPolish shoeslabelPM-polishshoes
sectionIron shirtlabelPM-ironshirt

sectionEnd

procedurelistPM-tyinglaces,PM-polishshoes,PM-ironshirt 

enddocument

share|improve this answer

answered 17 mins ago

egreg

683k8418183064

add a comment | 

up vote
1
down vote

This is possible with expl3, which already has features for processing comma separated lists and cycling over them.

documentclassarticle
usepackagexparse
usepackagehyperref

ExplSyntaxOn

NewDocumentCommandprocedurelistm
 
 seq_clear:N l__kjc_procedurelist_seq
 clist_map_inline:nn #1 
 
 seq_put_right:Nn l__kjc_procedurelist_seq
 
 PM~ref##1 & nameref##1
 
 
 begintabular
 hline
 seq_use:Nn l__kjc_procedurelist_seq \ \
 hline
 endtabular
 

seq_new:N l__kjc_procedurelist_seq

ExplSyntaxOff

begindocument

sectionTie laceslabelPM-tyinglaces
sectionPolish shoeslabelPM-polishshoes
sectionIron shirtlabelPM-ironshirt

sectionEnd

procedurelistPM-tyinglaces,PM-polishshoes,PM-ironshirt 

enddocument

A better table:

documentclassarticle
usepackagexparse,booktabs
usepackagehyperref

ExplSyntaxOn

NewDocumentCommandprocedurelistm
 
 seq_clear:N l__kjc_procedurelist_seq
 clist_map_inline:nn #1 
 
 seq_put_right:Nn l__kjc_procedurelist_seq
 
 ref##1 & nameref##1
 
 
 begintabularcl
 toprule
 multicolumn1ctextbfPM & textbfName \
 midrule
 seq_use:Nn l__kjc_procedurelist_seq \ \
 bottomrule
 endtabular
 

seq_new:N l__kjc_procedurelist_seq

ExplSyntaxOff

begindocument

sectionTie laceslabelPM-tyinglaces
sectionPolish shoeslabelPM-polishshoes
sectionIron shirtlabelPM-ironshirt

sectionEnd

procedurelistPM-tyinglaces,PM-polishshoes,PM-ironshirt 

enddocument

share|improve this answer

answered 17 mins ago

egreg

683k8418183064

add a comment | 

up vote
1
down vote

up vote
1
down vote

This is possible with expl3, which already has features for processing comma separated lists and cycling over them.

documentclassarticle
usepackagexparse
usepackagehyperref

ExplSyntaxOn

NewDocumentCommandprocedurelistm
 
 seq_clear:N l__kjc_procedurelist_seq
 clist_map_inline:nn #1 
 
 seq_put_right:Nn l__kjc_procedurelist_seq
 
 PM~ref##1 & nameref##1
 
 
 begintabular
 hline
 seq_use:Nn l__kjc_procedurelist_seq \ \
 hline
 endtabular
 

seq_new:N l__kjc_procedurelist_seq

ExplSyntaxOff

begindocument

sectionTie laceslabelPM-tyinglaces
sectionPolish shoeslabelPM-polishshoes
sectionIron shirtlabelPM-ironshirt

sectionEnd

procedurelistPM-tyinglaces,PM-polishshoes,PM-ironshirt 

enddocument

A better table:

documentclassarticle
usepackagexparse,booktabs
usepackagehyperref

ExplSyntaxOn

NewDocumentCommandprocedurelistm
 
 seq_clear:N l__kjc_procedurelist_seq
 clist_map_inline:nn #1 
 
 seq_put_right:Nn l__kjc_procedurelist_seq
 
 ref##1 & nameref##1
 
 
 begintabularcl
 toprule
 multicolumn1ctextbfPM & textbfName \
 midrule
 seq_use:Nn l__kjc_procedurelist_seq \ \
 bottomrule
 endtabular
 

seq_new:N l__kjc_procedurelist_seq

ExplSyntaxOff

begindocument

sectionTie laceslabelPM-tyinglaces
sectionPolish shoeslabelPM-polishshoes
sectionIron shirtlabelPM-ironshirt

sectionEnd

procedurelistPM-tyinglaces,PM-polishshoes,PM-ironshirt 

enddocument

share|improve this answer

answered 17 mins ago

egreg

683k8418183064

This is possible with expl3, which already has features for processing comma separated lists and cycling over them.

documentclassarticle
usepackagexparse
usepackagehyperref

ExplSyntaxOn

NewDocumentCommandprocedurelistm
 
 seq_clear:N l__kjc_procedurelist_seq
 clist_map_inline:nn #1 
 
 seq_put_right:Nn l__kjc_procedurelist_seq
 
 PM~ref##1 & nameref##1
 
 
 begintabular
 hline
 seq_use:Nn l__kjc_procedurelist_seq \ \
 hline
 endtabular
 

seq_new:N l__kjc_procedurelist_seq

ExplSyntaxOff

begindocument

sectionTie laceslabelPM-tyinglaces
sectionPolish shoeslabelPM-polishshoes
sectionIron shirtlabelPM-ironshirt

sectionEnd

procedurelistPM-tyinglaces,PM-polishshoes,PM-ironshirt 

enddocument

A better table:

documentclassarticle
usepackagexparse,booktabs
usepackagehyperref

ExplSyntaxOn

NewDocumentCommandprocedurelistm
 
 seq_clear:N l__kjc_procedurelist_seq
 clist_map_inline:nn #1 
 
 seq_put_right:Nn l__kjc_procedurelist_seq
 
 ref##1 & nameref##1
 
 
 begintabularcl
 toprule
 multicolumn1ctextbfPM & textbfName \
 midrule
 seq_use:Nn l__kjc_procedurelist_seq \ \
 bottomrule
 endtabular
 

seq_new:N l__kjc_procedurelist_seq

ExplSyntaxOff

begindocument

sectionTie laceslabelPM-tyinglaces
sectionPolish shoeslabelPM-polishshoes
sectionIron shirtlabelPM-ironshirt

sectionEnd

procedurelistPM-tyinglaces,PM-polishshoes,PM-ironshirt 

enddocument

share|improve this answer

answered 17 mins ago

egreg

683k8418183064

share|improve this answer

share|improve this answer

answered 17 mins ago

egreg

683k8418183064

answered 17 mins ago

egreg

683k8418183064

answered 17 mins ago

egreg

683k8418183064

683k8418183064

add a comment | 

add a comment | 

 

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