Find all in log file does not work properly with lines copied from the same log file

[Kittyfisto]

Current behaviour

If the pasted/entered line contains leading tabs, then "find all in log file" does not find ANY result

Expected behaviour

Since the search term was copied from the file, searching for it should reveal all lines with the same content (so at least one line), but never zero.

Steps to reproduce the problem

1. Open a log file which contains log lines with leading tabs
2. Select a log line in the log with leading tabs
3. Copy the log line (strg+c)
4. Paste the copied line to the "find all in log file" field (strg+v)

[Kittyfisto]

This issue is caused by WPF TextBoxes converting tab characters into a single by default. Copy & pasting a string such as "\tFoo" into such a TextBox causes it to be converted into " Foo" which is then propagated to the rest of the application. This in turn causes searches / filters to filter for the wrong white-space character which in turn causes the search / filter to behave wrong.

The solution is to set the "AcceptsTab" property of those TextBoxes to "True". This requires a patch for Metrolib since the latter provides some custom controls (for example FilterTextbox) which hide their inner TextBox.

[Kittyfisto]

Fixed with v0.9.0