multi_line does not work with label_parsed?
<p>I'm trying to make a graph with facet labels containing an expression and a regular value. But I can't make label_parsed to work with 'multi_line = FALSE'. Is there another way to make it in 1 line? (I mean besides combining the two factors in 1)</p>

<p>example:</p>

<pre><code>df&lt;-data.frame(x=1:3,y=1:3,f1=rep("TCRb",3),f2=1:3)
#make label to be parsed
df$f1.&lt;-df$f1
levels(df$f1.)&lt;-"paste('TCR',beta)^'-/-'"
#plot with two factor labels in 1 line
ggplot(df,aes(x,y))+geom_point()+
  facet_wrap(~f1+f2,labeller=labeller(.multi_line=F))
</code></pre>

<p><a href="https://i.stack.imgur.com/EmaWJ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/EmaWJ.png" alt="enter image description here"></a></p>

<pre><code>#now with two lines and the parsed label
ggplot(df,aes(x,y))+geom_point()+
  facet_wrap(~f1.+f2,labeller=labeller(f1.=label_parsed,.multi_line=T))
</code></pre>

<p><a href="https://i.stack.imgur.com/uEIaU.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/uEIaU.png" alt="enter image description here"></a></p>

<pre><code>#it doesn't work with 1 line
ggplot(df,aes(x,y))+geom_point()+
  facet_wrap(~f1.+f2,labeller=labeller(f1.=label_parsed,.multi_line=F))
</code></pre>

<p><a href="https://i.stack.imgur.com/PVkGf.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/PVkGf.png" alt="enter image description here"></a></p>