[pgf-tikz] Style with two "parameters" : problem with arguments

[Claude Quitte]

Hello

I attach a small LaTeX source using tikz and the pdf produced.

1. Context :

\usepackage{tikz}
\usetikzlibrary{decorations.markings}

\tikzset{->-/.style 2 args = {decoration={markings, mark=at position{#1} 
with {\arrow#2}},
                               postaction=decorate}}

2. No problem with :

\draw [->- = {0.6} {latex}]  (0,0) -- (1,0) ;
\draw [->- = {0.6}{{latex}}] (2,0) -- (3,0) ;

3. But, if no space between arguments, a problem with \draw [->- = 
{0.6}{latex}] (4,0) -- (5,0) ;
%% \draw [->- = {0.6}{latex}] (4,0) -- (5,0) ;
%% ! Package pgf Error: Unknown arrow tip kind 'l'.
%% See the pgf package documentation for explanation.
%% Type  H <return>  for immediate help.
%% ...
%% l.17 \draw [->- = {0.6}{latex}]   (4,0) -- (5,0) ;


4. No problem with

\draw [->-= {0.6}{[ultra thick]{>}}] (6,0) -- (7,0) ;

5. But, if a space between arguments, a problem with \draw [->-= {0.6} 
{[ultra thick]{>}}] (8,0) -- (9,0) ;

%% \draw [->-= {0.6} {[ultra thick]{>}}] (8,0) -- (9,0) ;
%% ! Package pgfkeys Error: I do not know the key 'ultra thick' and I am 
going to
%% ignore it. Perhaps you misspelled it.
%%
%% See the pgfkeys package documentation for explanation.
%% Type  H <return>  for immediate help.
%% ...
%% l.28 ...{0.6} {[ultra thick]{>}}] (8,0) -- (9,0) ;


THANKS for an answer.

Claude Quitte (France)


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