record: check that we are not committing a merge before patch selection
It might sound like a good idea to use record to filter changes when merging.
If someone attemps this, it's better to tell her "no" right ahead, before the
patch generation/line selection, so she does not spend time doing it just to
receive a red light after that (sometimes rather long) process.
adding a
comparing with l://
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% check that {1} syntax works
using http://localhost:/
sending between command
comparing with parts://localhost
sending heads command
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% check that paths are expanded
comparing with z://
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% errors