On 4/25/2018 7:29 AM, Mikael P. Sundqvist wrote:

On Sat, Apr 21, 2018 at 7:30 PM, Mikael P. Sundqvist mailto:mickep@gmail.com> wrote:

Dear Hans and others,

I'm usually use the \big, \Big, \bigg etc to get the size of parentheses, brackets and braces to be the size I want. I realize that the fences machinery is probably a cleaner way of doing this.

I tried it a bit, and it usually gives the result I like. But sometimes not, and it seems that the way to change the size of the parentheses/brackets/braces is to use the factor key.

1) Are the different options none, auto NUMBER explained somehere? 2) Could one have, for exceptional cases where the default is not satisfactory, a keyword like factor=big for example, to get the same size as if one would have used \big?

I am a bit confused. See the example below, with output (from latest standalone) attached.

/Mikael

PS: I would suggest to have  italic       = { feature = 'ss01', value = 1, comment = "Mathematical Alternative Lowercase Italic" }, set in lucida-opentype-math.lfg. In all books (on math) I have seen, I think this is what is used.

%%% Example file:

\setupbodyfont[lucidaot]

\definemathfence[Set][left="007B,right="007D,command=yes]

\startbuffer \startformula \Set{x\in\mathbb R~:~x^2=1} \stopformula \stopbuffer

\startTEXpage[offset=3bp]

\startformula \{x\in\mathbb R~:~ x^2=1\}%Too small \stopformula

\startformula \bigl\{x\in\mathbb R~:~ x^2=1\bigr\}%I like this one \stopformula

\startformula \Bigl\{x\in\mathbb R~:~ x^2=1\Bigr\}%Too big \stopformula

\getbuffer

\setupmathfence[Set][factor=1]%I like this one \getbuffer

\setupmathfence[Set][factor=auto]%Too big \getbuffer

%\setupmathfence[Set][factor=big]%Perhaps this could work? Or size=big or something %\getbuffer \stopTEXpage

I hate to do this, but a small *bump*

(If it is unclear what I'm asking for, I could try to clarify)

sort of unclear indeed these big things are tricky as in plain tex they depends on font dimensions and forced scaling but in context we have abit more control over these sizes you can add this to cont-new.mkiv \unprotect \unexpanded\def\math_fenced_fenced_indeed[#1]#2% {\iffirstargument\setupcurrentmathfence[#1]\fi \math_fenced_fenced_common \edef\p_size{\mathfenceparameter\c!size}% \ifx\p_size\empty\else \attribute\mathsizeattribute\numexpr\bigmathdelimitervariant*\plushundred+\p_size\relax \fi \math_fenced_left #2% \math_fenced_right \stopusemathstyleparameter \endgroup \advance\c_math_fenced_nesting\minusone} \protect and then do \setupbodyfont[lucidaot] \definemathfence[Set][left="007B,right="007D,command=yes] \startTEXpage[offset=1ex] \startformula \Set{x\in\mathbb R~:~x^2=1} \stopformula \startformula \Set[size=2]{x\in\mathbb R~:~x^2=1} \stopformula \startformula \Set[size=3]{x\in\mathbb R~:~x^2=1} \stopformula \startformula \Set[size=4]{x\in\mathbb R~:~x^2=1} \stopformula \stopTEXpage ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl -----------------------------------------------------------------