Hi,
Following MWE produces the error given below. I have been able to include
other tikz libraries (arrows, decorations) successfully.
*MWE*
\usemodule[tikz]
\usetikzlibrary{external}
\starttext
A
\stoptext
*Error*
---------------------------------------------
! Missing number, treated as zero.
system > tex > error on line 1290 in file
/home/deven/context/tex/texmf-modules/tex/generic/pgf/frontendlayer/tikz/libraries/tikzexternalshared.code.tex:
Missing number, treated as zero ...
1280 \gdef\tikzexternal@activate@normal@dq{\let"=\tikzexternal@normal@dq}
1281 \gdef\tikzexternal@activate@normal@sq{\let'=\tikzexternal@normal@sq}
1282
\gdef\tikzexternal@activate@normal@semic{\let;=\tikzexternal@normal@semic}
1283 \gdef\tikzexternal@activate@normal@and{\let&=\tikzexternal@normal@and}
1284
\gdef\tikzexternal@activate@normal@dash{\let-=\tikzexternal@normal@dash}
1285 \catcode`\|=0
1286 \catcode`\\=12
1287 |xdef|tikzexternal@normal@backslash{\}%
1288 }
1289 {
1290 >> \catcode`\^^I=12
1291 \catcode`\$=12
1292 \catcode`\%=12
1293 \catcode`\#=12
1294 \gdef\tikzexternal@HASHchar{#}
1295
\gdef\tikzexternal@TABchar{^^I}\gdef\tikzexternal@PERCENTchar{%}\xdef\tikzexternal@DOLLARchar{$}}
1296
1297 % Creates the '/tikz/external/system call' command as string and
1298 % returns it into the (global!) macro #2.
1299 % #1: the image file name (as returned by
1300 % \tikzexternalgetnextfilename)
<to be read again>
^
l.1290 \catcode`\^^
I=12
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