Convert token to string in LaTeX3
While trying to answer another question on this site, I was experimenting with peek_after:Nw and l_peek_token.
I can set l_peek_token OK, but then I want to test if this token is one of several characters, rather than just one character. (Just one character is easy and I could use peek_meaning:NTF.)
I thought that I would be able to easily convert l_peek_token to a string and then use str_if_in:nnTF for the test. But, I don't know how to do this.
I know I could use a bunch of nested token_if_eq_meaning:NNTF, but I find this syntax clumsy.
How can I do this?
MWE
documentclass{article}
usepackage{xparse}
ExplSyntaxOn
cs_new:Nn __dcp_test_punct:
{
% What goes here to convert l_peek_token to the right format?
str_if_in:nnTF {.,} { l_peek_token }
{ ~Punctuation~found:~ }
{ ~Punctionation~not~found~ }
---
% This works, but I find the syntax clumsy.
token_if_eq_meaning:NNTF l_peek_token .
{ ~Punctuation~found:~ }
{
token_if_eq_meaning:NNTF l_peek_token ,
{ ~Punctuation~found:~ }
{ ~Punctionation~not~found~ }
}
}
cs_new:Nn __dcp_test_punct:n
{
peek_after:Nw __dcp_test_punct:
}
DeclareDocumentCommand {testpunct} { m }
{
__dcp_test_punct:n {#1}
}
ExplSyntaxOff
begin{document}
testpunct{A}.
testpunct{A},
testpunct{A}
end{document}
expl3 strings token-lists
asked 12 mins ago
David PurtonDavid Purton
9,5551935
add a comment |
While trying to answer another question on this site, I was experimenting with peek_after:Nw and l_peek_token.
I can set l_peek_token OK, but then I want to test if this token is one of several characters, rather than just one character. (Just one character is easy and I could use peek_meaning:NTF.)
I thought that I would be able to easily convert l_peek_token to a string and then use str_if_in:nnTF for the test. But, I don't know how to do this.
I know I could use a bunch of nested token_if_eq_meaning:NNTF, but I find this syntax clumsy.
How can I do this?
MWE
documentclass{article}
usepackage{xparse}
ExplSyntaxOn
cs_new:Nn __dcp_test_punct:
{
% What goes here to convert l_peek_token to the right format?
str_if_in:nnTF {.,} { l_peek_token }
{ ~Punctuation~found:~ }
{ ~Punctionation~not~found~ }
---
% This works, but I find the syntax clumsy.
token_if_eq_meaning:NNTF l_peek_token .
{ ~Punctuation~found:~ }
{
token_if_eq_meaning:NNTF l_peek_token ,
{ ~Punctuation~found:~ }
{ ~Punctionation~not~found~ }
}
}
cs_new:Nn __dcp_test_punct:n
{
peek_after:Nw __dcp_test_punct:
}
DeclareDocumentCommand {testpunct} { m }
{
__dcp_test_punct:n {#1}
}
ExplSyntaxOff
begin{document}
testpunct{A}.
testpunct{A},
testpunct{A}
end{document}
expl3 strings token-lists
asked 12 mins ago
David PurtonDavid Purton
9,5551935
add a comment |
While trying to answer another question on this site, I was experimenting with peek_after:Nw and l_peek_token.
I can set l_peek_token OK, but then I want to test if this token is one of several characters, rather than just one character. (Just one character is easy and I could use peek_meaning:NTF.)
I thought that I would be able to easily convert l_peek_token to a string and then use str_if_in:nnTF for the test. But, I don't know how to do this.
I know I could use a bunch of nested token_if_eq_meaning:NNTF, but I find this syntax clumsy.
How can I do this?
MWE
documentclass{article}
usepackage{xparse}
ExplSyntaxOn
cs_new:Nn __dcp_test_punct:
{
% What goes here to convert l_peek_token to the right format?
str_if_in:nnTF {.,} { l_peek_token }
{ ~Punctuation~found:~ }
{ ~Punctionation~not~found~ }
---
% This works, but I find the syntax clumsy.
token_if_eq_meaning:NNTF l_peek_token .
{ ~Punctuation~found:~ }
{
token_if_eq_meaning:NNTF l_peek_token ,
{ ~Punctuation~found:~ }
{ ~Punctionation~not~found~ }
}
}
cs_new:Nn __dcp_test_punct:n
{
peek_after:Nw __dcp_test_punct:
}
DeclareDocumentCommand {testpunct} { m }
{
__dcp_test_punct:n {#1}
}
ExplSyntaxOff
begin{document}
testpunct{A}.
testpunct{A},
testpunct{A}
end{document}
expl3 strings token-lists
asked 12 mins ago
David PurtonDavid Purton
9,5551935
While trying to answer another question on this site, I was experimenting with peek_after:Nw and l_peek_token.
I can set l_peek_token OK, but then I want to test if this token is one of several characters, rather than just one character. (Just one character is easy and I could use peek_meaning:NTF.)
I thought that I would be able to easily convert l_peek_token to a string and then use str_if_in:nnTF for the test. But, I don't know how to do this.
I know I could use a bunch of nested token_if_eq_meaning:NNTF, but I find this syntax clumsy.
How can I do this?
MWE
documentclass{article}
usepackage{xparse}
ExplSyntaxOn
cs_new:Nn __dcp_test_punct:
{
% What goes here to convert l_peek_token to the right format?
str_if_in:nnTF {.,} { l_peek_token }
{ ~Punctuation~found:~ }
{ ~Punctionation~not~found~ }
---
% This works, but I find the syntax clumsy.
token_if_eq_meaning:NNTF l_peek_token .
{ ~Punctuation~found:~ }
{
token_if_eq_meaning:NNTF l_peek_token ,
{ ~Punctuation~found:~ }
{ ~Punctionation~not~found~ }
}
}
cs_new:Nn __dcp_test_punct:n
{
peek_after:Nw __dcp_test_punct:
}
DeclareDocumentCommand {testpunct} { m }
{
__dcp_test_punct:n {#1}
}
ExplSyntaxOff
begin{document}
testpunct{A}.
testpunct{A},
testpunct{A}
end{document}
expl3 strings token-lists
expl3 strings token-lists
asked 12 mins ago
David PurtonDavid Purton
9,5551935
asked 12 mins ago
David PurtonDavid Purton
9,5551935
asked 12 mins ago
David PurtonDavid Purton
9,5551935
asked 12 mins ago
David PurtonDavid Purton
9,5551935
asked 12 mins ago
David PurtonDavid Purton
9,5551935
9,5551935
add a comment |
add a comment |
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