OpenEuphoria

Adding "Short cuts" to ed.ex - was "hello" (alex..)

• Posted by Ken Rhodes <ken_rhodes30436 at yahoo.com> May 15, 2002
• 387 views

Alex asked:
1) Did anybody already write some kind of preprocessor
for eu which supports 
shortcuts for keywords (like proc->procedure,
func->function, endp, endf, endw, 
endfor, endif, ...)? I have to admit that I have most
trouble typing that 'SEQuence' 
which annoyed me so much that I replaced it with type
'list' = return 1. Or, maybe ED 
or EE or some other editor supports these features?

ED.EX can be very easily "extended" in the manner you
suggest. For example the code that follows implements
"proc" as a shortcut for "procedure":

-- expandable words & corresponding text
constant expand_word = {"if", "for", "while", "elsif",
                        "procedure", "proc", "type",
"function"},

         expand_text = {" then",  "=  to  by  do",  "
do",  " then",
                        "()", "()",  "()", "()"

-- all I have done here is insert "proc" in the
-- expand_word sequence and then a matching "()" in 
-- the expand_text sequence

-- and then insert the following 'elsif' clause into
the procedure "try_auto_complete (char key) which
imediately follows the above:

elsif find(word, {"proc"}) then
                 add_queue(repeat(BS,5) & "procedure
")
                    insert_string(begin & '\t' & CR &
                                  leading_white &
                                  "end " &
"procedure")

--- BINGO!  thats all there is to it
--- once you study the routines Rob has built into
--- ED.EX, you will find that it is usually very
--- easy to add many helpful features

hope this helps

Ken Rhodes