Fix ACI parameter handling

[westram]

Situation:

some ACI function automatically evaluate their parameters, namely

• all binary operators (like minus, plus, …) and
• the select command

The binary operator only evaluate if called in the flavor that uses 2 parameters!

Effects:

• calling minus(7,2) does not work (error)
  • need to use minus("\"7\"","\"2\"")
• calling hitidx|mult(100)|div(hitcount) does not work
  • there is now way to force evaluation of 'hitcount'

Possible solution:

• never automatically evaluate parameters (grep code for EVALUATED_PARAM)
• force evaluation using the prefixes |, : and /
  ⇒ evaluate rest of parameter using ACI, SRT or REG
  ⇒ use result as effective parameter
• use \ before (unwanted) prefix character

Problem:

• will break existing ACI-code
  ⇒ fix ACI-code delivered with ARB

[westram]

started to document new behavior

[westram]

probably related:

|command("/^.*\\(/\\(/")|command("/\\).*/\\)/")

applied to

 [EBI] 19-SEP-1990 (Rel. 25, Created)|28-AUG-1995 (Rel. 45, Last updated, Version 4) [RDP] 18-SEP-1990

results in

(/")|command("/).*/)Rel. 45, Last updated, Version 4) [RDP] 18-SEP-1990

The command gets inserted into data.