[Tcl-bugs] [ tktoolkit-Bugs-3475627 ] Test text-31.11 fails

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Bugs item #3475627, was opened at 2012-01-18 12:50
Message generated for change (Comment added) made by fvogelnew1
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https://sourceforge.net/tracker/?func=detail&atid=112997&aid=3475627&group_id=12997

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Category: 18. [text]
Group: current: 8.5.10
Status: Open
Resolution: None
>Priority: 7
Private: No
Submitted By: Francois VOGEL (fvogelnew1)
>Assigned to: Jan Nijtmans (nijtmans)
Summary: Test text-31.11 fails

Initial Comment:
==== text-31.11 peer widget -start, -end FAILED
==== Contents of test case:

    .t delete 1.0 end
    for {set i 1} {$i < 100} {incr i} {
        .t insert end "Line $i\n"
    }
    set res [.t index end]
    lappend res [catch {.t configure -start 5 -end 15}]
    lappend res [.t index end]
    lappend res [catch {.t configure -start 10 -end 40}]
    lappend res [.t index end]
    .t configure -start {} -end {}
    lappend res [.t index end]
    set res

---- Result was:
101.0 0 97.0 0 92.0 101.0
---- Result should have been (exact matching):
101.0 0 11.0 0 31.0 101.0
==== text-31.11 FAILED


Happens on both core-8-5-branch and trunk


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>Comment By: Francois VOGEL (fvogelnew1)
Date: 2012-01-20 09:15

Message:
When changing -startline and/or -endline, any text index becomes
potentially outdated.

Therefore textPtr->sharedTextPtr->stateEpoch must be incremented in
function ConfigureText so that indices get recomputed when queried after
such a change.

I have proposed a patch fixing this:

https://sourceforge.net/tracker/index.php?func=detail&aid=3476698&group_id=12997&atid=312997

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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=112997&aid=3475627&group_id=12997