Miscellaneous utilities
Usage
drop_items(items, which)
select_items(items, which)
drop_whitespace(items)
trim_whitespace(items)
include_whitespace(items, which)
split_list(items, splits)
split_latex(items, splits)
split_chars(item, split = "")
new_block(...)
new_env(name, ...)Arguments
- items
A LaTeX2 object or list of items, or a LaTeX2item which is a list.
- which
Which items to operate on.
- splits
Which items divide the parts?
- item
A non-list LaTeX2item.
- split
Where to split the characters.
- ...
Items to be passed to
latex2().- name
The desired environment name.
Value
drop_items() returns the list of items with specific items removed.
select_items() returns the list of subsetted items.
drop_whitespace() returns the items with
whitespace (blanks, tabs, newlines) removed.
trim_whitespace() returns the items with
leading and trailing whitespace (blanks, tabs, newlines) removed.
include_whitespace() returns which with
following whitespace (blanks, tabs, newlines) included.
split_list() returns a list of pieces
separated at the splits.
split_latex() returns a list of pieces
separated at the splits. Each piece is marked as
a LaTeX2 object.
split_chars() returns a LaTeX2
list containing the result of calling strsplit
on the text of the item.
new_block() returns a BLOCK item containing the items.
new_env() returns an environment item containing the other items.
Note
drop_whitespace() will drop the whitespace that separates text items, so deparsing will merge
them into a single item.
See also
drop_whitespace() does not act recursively; use reduce_whitespace for that.
Examples
parsed <- parseLatex("Hello")
unclass(parsed)
#> [[1]]
#> TEXT: Hello
#>
unclass(split_chars(parsed[[1]]))
#> [[1]]
#> TEXT: H
#>
#> [[2]]
#> TEXT: e
#>
#> [[3]]
#> TEXT: l
#>
#> [[4]]
#> TEXT: l
#>
#> [[5]]
#> TEXT: o
#>
new_block(parseLatex("abc"))
#> BLOCK: {abc}
new_env("itemize", parseLatex("\\item An item"))
#> ENVIRONMENT: \begin{itemize}\item An item\end{itemize}