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If you use Qt Creator 2.2.1 and git, you may encounter "You did not checkout a branch" when commiting even if other functions of git are working well. This is because git changed the output style of 'status' command. For example, git 1.7.3.2 prepends '#' to each message line. However, git 1.8.5.2 does not. The ways to avoid this problem are upgrading Qt Creator or downgrading git. Unforunately, however, both are not acceptable solutions. The other way is to patch the sources of Qt Creator and to build your own one. Here is the patch for Qt Creator 2.2.1. Colored By Color Scripter ™ 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 diff --git a/src/plugins/git/commitdata.cpp b/src/plugins/git/commitdata.cpp index 6bc2a97..3eb6562 100644 --- a/src/pl...

If you are developing with Qt 4 on OS/2, Qt Creator is your best tool. By the way, Right after Qt Creator is started, a system is frozen during about 30 seconds. Unfortuantely, I could not find the cause of this. So just waited for a system to be unfrozen. Meanwhlie, some messages related to Perforce(p4) are being printed on a message window. I'm using p4 to access 4os2 repository. Hoping to fix this problem, I removed it from Qt Creator settings([Tools] - [Options] - [Version Control] - [Perfoce] - [Configuration] - [P4 command]). By this, the problem was fixed really. If you are using Perfoce(p4) and Qt Creator cause a system to be frozen, remove the settings for P4 from Qt Creator.