Signature help not show up in if-else branch

[renkun-ken]

Consider the following code:

if (sum()) {

} else if (sum()) {

}

In the if (sum()) branch, the signature help of sum() works while it does not work in the else if (sum()) branch when I type sum(.

[randy3k]

It is due to a bug in the function find_unbalanced_bracket:

languageserver:::find_unbalanced_bracket("if (sum())", 0, 7)
[[1]]
[1] 0 7

[[2]]
[1] "("

# it finds a wrong `(` when there is a leading brace `}`
languageserver:::find_unbalanced_bracket("} if (sum())", 0, 9)
[[1]]
[1] 0 5

[[2]]
[1] "("