-proc cmd_help {cmdname h indent} {
- set indent [expr $indent * 2]
-
- set fmt_str [format "%%%ds%%-%ds %%s" $indent [expr 25 - $indent]]
- set w [expr 50 - $indent]
- set n 0
-
- while 1 {
- if {$n > [string length $h]} {break}
-
- set next_a [expr $n + $w]
- if {[string length $h] > $n + $w} \
- {
- set xxxx [string range $h $n [expr $n + $w]]
- for {set lastpos [expr [string length $xxxx] - 1]} \
- {$lastpos >= 0 && [string compare \
- [string range $xxxx $lastpos $lastpos] " "] != 0} \
- {set lastpos [expr $lastpos - 1]} \
- {
- }
- #set next_a -1
- if {$lastpos != -1} {
- set next_a [expr $lastpos + $n + 1]
- }
- }
-
- puts [format $fmt_str "" $cmdname \
- [string range $h $n [expr $next_a - 1]] ]
- set cmdname ""
- set n [expr $next_a]
- }
-}
-
-#Print help text for a command. Word wrap
-#help text that is too wide inside column.
-proc help {args} {
- global ocd_helptext
- set cmd $args
- foreach a [lsort $ocd_helptext] {
- if {[string length $cmd] == 0 || \
- [string first $cmd $a] != -1 || \
- [string first $cmd [lindex $a 1]] != -1} \
- {
- cmd_help [lindex $a 0] [lindex $a 1] 0
+# All commands are registered with an 'ocd_' prefix, while the "real"
+# command is a wrapper that calls this function. Its primary purpose is
+# to discard 'handler' command output,
+proc ocd_bouncer {name args} {
+ set cmd [format "ocd_%s" $name]
+ set type [eval ocd_command type $cmd $args]
+ set errcode error
+ if {$type == "native"} {
+ return [eval $cmd $args]
+ } else {if {$type == "simple"} {
+ set errcode [catch {eval $cmd $args}]
+ if {$errcode == 0} {
+ return ""
+ } else {
+ # 'classic' commands output error message as part of progress output
+ set errmsg ""