{parsing} is the process of analysing a string of symbols, either in natural or computer language.

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How to automatically insert values into latex code/template

I'm in the process of generating an automated report in pdf from latex. Each report is the same, but has different values/graphs. The graphs is no problem, but what is the best way to process a latex ...
5
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2answers
159 views

Parsing leading hardspaces

This question is related to (but distinct from) this question: Parsing a \$ as part of an improved \getargs command, which I asked earlier. I am experiencing a residual space in a string result from ...
7
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4answers
214 views

How to break a line after the n-th word?

Suppose i have a raw text defined as: \newcommand{\rawtext}{this is some raw text with many words in it} How to break this line after a given word or position? Of course, i only have access to ...
6
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1answer
154 views

Parsing a \$ as part of an improved \getargs command

As the author of stringstrings, I am acutely aware of its slowness. For small tasks, that slowness can be annoying. For larger tasks, it can be prohibitive. Recently, in using data column as ...
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0answers
148 views

Help with verbatim-like environments [closed]

I am writing a script for LaTeX shallow parsing (assuming that there are no complicated definitions in the preamble). First of all I decided to check the document for in-line verbatims and comments, ...
19
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3answers
394 views

What are the effects of an empty group, {}?

In order to have a syntactic space after a no-argument command, one is taught to delimit the command token with an empty group ({}), like this: \somecommand{} more LaTeX material. However an empty ...
8
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1answer
376 views

Replacing Leading Minus Signs in Environment

In this question concerning negative signs and the alignment of entries in matrix environments, Heiko Oberdiek gave a great answer in which he uses a user-defined command called \matminus instead of ...
4
votes
2answers
480 views

Shell script which parses .tex files for figures

I would like to pull all figures including captions out of multiple .tex files and write them into a single new .tex file. This means I have to parse for \begin{figure} . . . \end{figure} and ...
9
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5answers
383 views

Parse dotted string, extracting last part

I want a macro that will separate a string like "1.2.3" into two parts: the part until the last dot (call that the context) and the last number. This seems a pretty basic application of a helper ...
10
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2answers
449 views

The different meanings of LaTeX's \stop command

we know that \stop will cause LaTeX to stop parsing and output what it has processed up to this command. But then I discovered another way to use it, as demonstrated in this minimum working ...
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1answer
271 views

Using \SplitArgument with r() arguments in xparse

I have been experimenting with using the xparse package for custom document macros with a Markdown-like syntax. For example, I used to write \cut{x}{P}{Q} to produce . With the help of xparse, I ...
6
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1answer
346 views

Arbitrary text parsing from a separate file

I'm still very new to the world of TeX, so please bear with me if this question is unclear or has been asked before. I'm starting to figure my way through TeX and the millions of plugins and ...
3
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2answers
298 views

How to stop a block of code from being parsed?

I would like to pass some latex code to lua directly without it being parsed: \directlua{ PrintPrettyLatexCode("LATEX CODE GOES HERE!") } BUT latex tries to parse the "LATEX CODE GOES HERE!". I ...
13
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4answers
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Drawing Young tabloids

I would like LaTeX to produce output like the following (without the 2 a so called Young tabloid), ideally by writing \ytabloidshort{123,56} (using one character per cell, ideally allowing ...
9
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3answers
442 views

Implementing car and cdr in TeX

I've been trying to implement a macro that reads and transforms its argument into a different form...but I'm having quite a bit of trouble finding or creating even the most basic parsing tools. Case ...
3
votes
1answer
141 views

pgfparser module and blank spaces

After the question Macro for a code translator, I followed the advice of polgab and used the pgf parser module. I was very disappointed when I reached the point of trying to parse a blank space. I ...
13
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1answer
153 views

What is considered a token for non-standard input encodings?

When I use an input encoding to (La)TeX that allows me to directly input characters such as é and ä (such as by declaring \usepackage[utf8]{inputenc}), how is a token defined? Specifically, is it ...
10
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1answer
512 views

Extract the logically first slide in a Beamer overlay specification?

When writing Beamer slides for a talk, I find that I often want to have some text (usually math) visible on a group of slides and be alerted on only the first slide in the group. For example, I can ...
6
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3answers
160 views

String parsing macro fails within custom cite command of biblatex?

I am trying to use the same string parsing macro as in String parsing macro fails within a minipage environment?; but this time in context of biblatex - and I'm having similar problems, I guess. ...
4
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1answer
593 views

String parsing macro fails within a minipage environment? [closed]

I am trying to work with a string parsing macro, found in the answer of TeX capacity exceeded while parsing a date string - TeX - LaTeX. Basically, I have strings num01, num02... num09 - from these, ...
6
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1answer
147 views

Is it possible to scan until the end of the current `\item`

I do a lot of itemize lists in beamer presentation which, in a later step, I want to format nicely, for instance, typeset everything up to the first colon in boldface and the remaining part scriptsize ...
5
votes
1answer
235 views

Parse a file with a regexp and return first match

I need to write a command that searches a file for a string that matches a certain regexp, and inserts that string. I know how to parse a string of text using a regex with \usepackage{l3regex} ...
5
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3answers
708 views

How to extract parts of (La)TeX document?

I want to run queries against LaTeX documents like these: get list of all equations, even if one declares \def\be{\begin{equation}} and uses it; get list of all arguments of some command (e. g. ...
9
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4answers
383 views

Read command with varying input arguments

Out of curiosity I'd like to define a LaTeX command that looks like: \newcommand{\trigger}{out1,out2,...,outn} with a rather strange function (at least, I couldn't find anything like this ...
-1
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1answer
183 views

LPeg alternative match? [closed]

Looking over the LPeg docs I do not see a way to have alternatives(OR) http://www.inf.puc-rio.br/~roberto/lpeg e.g., a | b will match a or b. Am I missing something?
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2answers
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Stringified commands to macros sequence [closed]

First, what is the proper terminology for a "string" in TeX/LaTeX that is an argument for a macro? e.g., \macro{somestring} Obviously somestring is a token, set of tokens, string, argument, etc. I ...
6
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4answers
757 views

Parse a string into tokens of numbers and not numbers

I have a string that I want to parse into to numbers and non-numbers. For my purposes: A Number can EITHER be any sequential string of digits OR sequential string of digits with a . followed by ...
6
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4answers
488 views

List parsing with special input/optional arguments

I’d like to parse a list where the elements can be given as either [<pre>]<text>[<post>], where <pre> and <post> are optional, or (<special text>). I found a ...
16
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5answers
483 views

Applying an operation only to capitals

I'd like to apply a function to capitals only so that: \emphcaps{YaWeH} Outputs like: \emph{Y}a\emph{W}e\emph{H} Preferably without using too many packages (I already use memoir). NOTES: I use ...
3
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1answer
122 views

Parsing some buzzwords in the Latex document and replacing them by link possible?

Is it possible to parse teh whole document automatically, looking for buzzwords, which I will maintain in a special list, and replacing the buzzwords by links to a predefined page e.g. a glossary?
5
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1answer
185 views

How to skip an `\item` entirely, with no side-effects?

In Ryan Reich's great answer to my question on onlyitems, he had LaTeX ignore an \item by setting it into a box and then not using the box, effectively discarding it: ...SNIP... ...
3
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2answers
499 views

Split long string into paragraphs

How can I test a string to see if it has more than one paragraph, and split a string that contains multiple paragraphs into two strings, one with the first paragraph of the original, one with the ...
5
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2answers
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In the siunitx package, how do i get it to produce uncertainties with the \pm symbol instead of parenthesis

Using the siunitx package, if I specify an error with the \pm symbol then it automatically converts it to a form using parenthesis. I would like it to not do this and keep the \pm symbol, but still ...
5
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1answer
903 views

Generate a parse tree for TeX

If I google for parse tree and TeX. All I'm getting are how to draw parse trees in TeX. I want to know if there are programs that can parse TeX, and output a parse tree that's easy to manipulate.
5
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3answers
238 views

Cartesian product of two lists as parameters for a command

Friends, I used to suffer a lot when had to iterate through elements of a list, but thanks to egreg's suggestion, I've been successfully using the etoolbox package for that task, e.g.: ...
2
votes
2answers
354 views

Time calculation for task reports

Consider this MWE: \documentclass{article} \newenvironment{dayreport}{\begin{tabular}{ll}\hline Task & Time\\\hline}{\hline\end{tabular}} \newcommand{\task}[2]{#1 & #2\\} \begin{document} ...
7
votes
2answers
669 views

Formatting crystallographic indices

I would like to make a command in LaTeX that can be used like this: \zoneaxis{1 2 -3} \zoneaxis{2 -1 -1 10} and would produce this: $[1\,2\,\overline{3}]$ $[2\,\overline{1}\,\overline{1}\,10]$ ...
13
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5answers
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How do I write a macro having comma-separated and variable number of arguments?

I want to write a macro in LaTeX2e that can pass \textcolor, which is embedded in another macro, the values of the colour model gray, rgb, or cmyk. The number of arguments specified implies the colour ...
13
votes
2answers
987 views

Parsing files through LuaTeX

This question has two parts: How would one generally parse a file with LuaTeX, assuming the file only holds data that is delimited either by spaces, commas or semicolons. How would you parse the ...
10
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2answers
721 views

\def taking next word as argument?

This question is a variant of my previous question requesting a macro that takes the rest of the line as argument. I would like to write a macro that would take the next word as argument, where word ...
8
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2answers
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Iterate over space-separated list

I’ll briefly explain the background in case this can be solved simpler but I’d still be interested in an answer to the actual question, too. My chapter titles are very narrow and use a large font so ...
11
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1answer
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pgfplot: Datafile format for datetime field

I have a datafile (which I may manipulate to any format), it contains a date-time stamp currently in the form "year-month-day hour:min" and a single variable for each recorded time. When I attempt to ...
5
votes
4answers
2k views

LaTeX parser to perform operations on tags (commands) and its content?

Is there a LaTeX parser available that can be run from a (*nix) command line, and that allows operations on LaTeX tags/commands and its content? What I am trying to do is, for example: script-wise ...
9
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3answers
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What parsers for (La)TeX mathematics exist outside of the TeX engines?

Inspired by the author's motivation for asking Is there a BNF grammar of tex language. Are there any well done libraries that can parse some subset of TeX mathematics independently of the TeX engine? ...
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4answers
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Is there a BNF grammar of the TeX language?

I'm looking for a BNF grammar of the TeX language, does it exist?
13
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5answers
1k views

Parse comma-separated list of command names with spaces

Problem This question is related to How can I specify a long list of math operators? – but with a twist: I want to allow spaces in in the comma-separated list, like so: \newacronyms{acm, ams, cpu, ...
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4answers
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Syntax of TeX/LaTeX

{} and [] do some kind of grouping, and comma seems to be special as well. Being a programmer I find it frustrating to use Latex on incantation-only basis. I would like to know how does it exactly ...