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24 lines
813 B
Plaintext
24 lines
813 B
Plaintext
This fixes a bug which can result in a value out of range error if the
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cursor is at the beginning of a TextPort and the DeleteToStartOfLine
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procedure is invoked.
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This patch has been sent to SRC.
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--- m3/vbtkit/src/etext/TextPortClass.m3.orig Mon Jan 30 14:34:34 1995
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+++ m3/vbtkit/src/etext/TextPortClass.m3 Thu May 8 17:20:58 1997
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@@ -271,8 +271,12 @@
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left := MTextUnit.StartOfLine (v.vtext.mtext, here);
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BEGIN
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IF here = left THEN
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- (* We're already at the start of line; delete one char. *)
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- RETURN v.replace (here - 1, here, "")
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+ (* Already at the start of line; delete preceding newline if any. *)
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+ IF here > 0 THEN
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+ RETURN v.replace (here - 1, here, "")
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+ ELSE
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+ RETURN NotFound
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+ END
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ELSE
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RETURN v.replace (left, here, "")
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END
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