How to listen for more than one event expression within a Shiny eventReactive handler

I know this is old, but I had the same question. I finally figured it out. You include an expression in braces and simply list the events / reactive objects. My (unsubstantiated) guess is that shiny simply performs the same reactive pointer analysis to this expression block as to a standard reactive block.

observeEvent({ 
  input$spec_button
  mainplot.click$click
  1
}, { ... } )

EDIT

Updated to handle the case where the last line in the expression returns NULL. Simply return a constant value.

Also:

observeEvent(c( 
  input$spec_button,
  mainplot.click$click
), { ... } )

I've solved this issue with creating a reactive object and use it in event change expression. As below:

xxchange <- reactive({
paste(input$filter , input$term)
})

output$mypotput <- eventReactive( xxchange(), {
...
...
...
} )