Tyring to write a test to cover this case I found that obstructed files are (correctly) detected as local modifications in the work tree. Thus they trigger the pre-condition check for local modications and 'got merge' will not even start to do any work in the presence of obstructed files.

Additional testing by Thomas Adam. ok tracey

ok tracey

A no-op replayed history ends up having exactly the same commit IDs if all commits are created at roughly the same moment in time. There are no content changes involved so if commit timestamps do not differ then commit hashes will be the same. In which case there is no fork in history for 'got histedit -l' to display, yet the test was always expecting a fork in history to be displayed. Update the test to take this issue into account. The test will now pass no matter which result is produced by the histedit operation. Problem found by Lucas who observed that this test was randomly failing. Patch also provided by Lucas.

pthread_yield(3) is an optional POSIX 2001 extension while sched_yield(2) is part of POSIX 2008. On OpenBSD they are actually equivalent, albeit not documented as such. Using sched_yield(2) helps the -portable version. Patch by Quentin Rameau

Escape sequences are not handled by every echo(1), e.g. not on FreeBSD. '?' is a glob character and must be quoted. '!' is not a shell meta character. ok tracey stsp

ok tracey