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1%D \module
2%D   [       file=strc-tnt,
3%D        version=2019.05.30, % based on older code
4%D          title=\CONTEXT\ Structure Macros,
5%D       subtitle=Text Notes,
6%D         author=Hans Hagen,
7%D           date=\currentdate,
8%D      copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
9%C
10%C This module is part of the \CONTEXT\ macro||package and is
11%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
12%C details.
13
14\unprotect
15
16%D \macros
17%D   {definetextnote,setuptextnote}
18%D
19%D \startbuffer
20%D \definetextnote
21%D   [textnote]
22%D
23%D \startbuffer
24%D Test test test \textnote [n=5] {alpha}. test test test test tets test test
25%D \textnote [n=10] {beta}. Test test test test tets test test \textnote [n=12]
26%D {gamma}. Test test test test tets test test \textnote [n=24] {delta}. Test test
27%D test test test test \textnote {epsilon} test test \textnote [n=*] {zeta}.
28%D \stopbuffer
29%D
30%D \blank {\setuptextnote[empty=yes]    \getbuffer\par} \blank
31%D \blank {\setuptextnote[empty=number] \getbuffer\par} \blank
32%D \blank {\setuptextnote[empty=none]   \getbuffer\par} \blank
33%D \blank {                             \getbuffer\par} \blank
34%D
35%D \blank[2*big]
36%D
37%D \placenotes[textnote:note][criterium=text]
38%D \stopbuffer
39%D
40%D \typebuffer \getbuffer
41
42\installcorenamespace{textnote}
43
44\installcommandhandler \??textnote {textnote} \??textnote
45
46\definebar
47  [\v!textnote:\v!underbar]
48  [\v!underbar]
49
50\definenote
51  [\v!textnote:\v!note]
52
53\setuptextnote
54  [\c!rule=\v!textnote:\v!underbar,
55   \c!note=\v!textnote:\v!note,
56   \c!n=10] % * will use the real space
57
58\appendtoks
59    \setuevalue{\currenttextnote}{\educ_textnote{\currenttextnote}}%
60\to \everydefinetextnote
61
62\unexpanded\def\educ_textnote#1%
63  {\dontleavehmode
64   \begingroup
65   \def\currenttextnote{#1}%
66   \dosingleempty\educ_textnote_indeed}
67
68\def\educ_textnote_indeed[#1]#2% we could use setups but it's overkill
69  {\iffirstargument\setupcurrenttextnote[#1]\fi
70   \edef\p_n{\textnoteparameter\c!n}%
71   \edef\p_empty{\textnoteparameter\c!empty}%
72   \edef\currentbar{\textnoteparameter\c!rule}%
73   \edef\currentnote{\textnoteparameter\c!note}%
74   \ifx\p_n\wildcardsymbol
75     \donefalse
76     \ifx\p_empty\v!yes
77       \donetrue
78     \else\ifx\p_empty\v!number
79       \donetrue
80     \else\ifx\p_empty\v!none
81       \donetrue
82     \fi\fi\fi
83     \ifdone
84       \setupbar[\currentbar][\c!empty=\v!yes]%
85     \fi
86     \inlinebar[\currentbar]\bgroup
87       \wordboundary#2%
88       \ifx\p_empty\v!yes
89         \setnotetext[\currentnote]{#2}%
90       \else\ifx\p_empty\v!number
91         \runninghbox{\resetbar\setnote[\currentnote]{#2}}%
92       \else\ifx\p_empty\v!none
93         \setupnote[\currentnote][\c!location=\v!none]%
94         \runninghbox{\resetbar\setnote[\currentnote]{#2}}%
95       \fi\fi\fi
96     \egroup
97   \else
98     \inlinebar[\currentbar]\bgroup
99       \scratchcounter\numexpr\p_n/\plustwo\relax
100       \ifx\p_empty\v!yes
101         \interwordspacesbefore\scratchcounter
102         \setnotetext[\currentnote]{#2}%
103         \interwordspacesafter\scratchcounter
104       \else\ifx\p_empty\v!number
105         \interwordspacesbefore\scratchcounter
106         \zwnj\runninghbox{\resetbar\setnote[\currentnote]{#2}}\zwnj
107         \interwordspacesafter\scratchcounter
108       \else\ifx\p_empty\v!none
109         \setupnote[\currentnote][\c!location=\v!none]%
110         \interwordspacesbefore\scratchcounter
111         \zwnj\runninghbox{\resetbar\setnote[\currentnote]{#2}}\zwnj
112         \interwordspacesafter\scratchcounter
113       \else
114          #2%
115       \fi\fi\fi
116     \egroup
117   \fi
118   \endgroup}
119
120\protect \endinput
121