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isincomplete
2006 Oct 29
3
R GUI API: suggestion for R function to put in there?
...is is discussed
in a previous thread. We now have withVisible().
- To know if some R code is complete or is continued to the next line.
The following trick was suggested by Peter Dalgaard once, but it is
fragile because it depends on the way R prints errors, and that may
change in the future:
isLineComplete <- function(x) {
# x is a character string vector with R code
# The function determines if the parser is satisfied with it
# or it needs more input (code is continued at the next line)
# First parse code
con <- textConnection(x)
expr <- try(parse(...