Three ways of grouping: compare and contrast

Asked Aug 06 '15 at 09:42

Active Aug 06 '15 at 13:24

Viewed 256 times

Grouping is often important in TeX/LaTeX programming. I know of three ways to delimit a group:

Via a \begingroup…\endgroup pair;
Via a pair of matched braces {};
Via a \bgroup…\egroup.

Now I am wondering: what is the difference between these three? Does their effect depend on whether they appear in math mode or text mode? In which way, if so?

Note: I am sure that if I look through the TeXBook, TeX By Topic, and some other resources I will find an answer. However, I am sure there are many others who are curious about this and do not have the time to engage in such a search -- just like me. It would surely be useful to have the info all in one place -- e.g. as an answer here.

edited Aug 06 '15 at 13:24

asked Aug 06 '15 at 09:42

MickG

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2

Related http://tex.stackexchange.com/questions/1930/when-should-one-use-begingroup-instead-of-bgroup – Joseph Wright Aug 06 '15 at 09:43
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number 3 should be \bgroup ... \egroup, not \endgroup. – barbara beeton Aug 06 '15 at 13:00
@barbarabeeton right, fixed. – MickG Aug 06 '15 at 13:25

Three ways of grouping: compare and contrast

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