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Avoid panics while rendering

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This commit is contained in:
Kovid Goyal 2023-03-23 13:48:44 +05:30
parent 3236a42cb7
commit ccfae228b9
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GPG Key ID: 06BC317B515ACE7C
1 changed files with 7 additions and 1 deletions
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8
tools/cmd/diff/render.go
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@ -149,7 +149,13 @@ type LogicalLines struct {
func (self *LogicalLines) At(i int) *LogicalLine { return self.lines[i] }
func (self *LogicalLines) ScreenLineAt(pos ScrollPos) string {
return self.lines[pos.logical_line].screen_lines[pos.screen_line]
if pos.logical_line < len(self.lines) && pos.logical_line >= 0 {
line := self.lines[pos.logical_line]
if pos.screen_line < len(line.screen_lines) && pos.screen_line >= 0 {
return self.lines[pos.logical_line].screen_lines[pos.screen_line]
}
}
return ""
}
func (self *LogicalLines) Len() int { return len(self.lines) }