git-gui: fix initial git gui message encoding

This fix refers https://github.com/git-for-windows/git/issues/664

After `git merge --squash` git creates .git/SQUASH_MSG (UTF-8 encoded)
which contains squashed commits. When run `git gui` it copies SQUASH_MSG
to PREPARE_COMMIT_MSG, but without honoring UTF-8. This leads to encoding
problems on `git gui` commit prompt.

The same applies on git cherry-pick conflict, where MERGE_MSG is created
and then is copied to PREPARE_COMMIT_MSG.

In both cases PREPARE_COMMIT_MSG must be configured to store data in UTF-8.

Signed-off-by: yaras <yaras6@gmail.com>
Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net>

diff --git a/git-gui.sh b/git-gui.sh
index 11048c7a0e94f598b168de98d18fda9aea420c7d..1ed51857e9122707467c8ebe09f30c8aa82fed6e 100755 (executable)
--- a/git-gui.sh
+++ b/git-gui.sh
@@ -1616,11 +1616,13 @@ proc run_prepare_commit_msg_hook {} {
        if {[file isfile [gitdir MERGE_MSG]]} {
                set pcm_source "merge"
                set fd_mm [open [gitdir MERGE_MSG] r]
+               fconfigure $fd_mm -encoding utf-8
                puts -nonewline $fd_pcm [read $fd_mm]
                close $fd_mm
        } elseif {[file isfile [gitdir SQUASH_MSG]]} {
                set pcm_source "squash"
                set fd_sm [open [gitdir SQUASH_MSG] r]
+               fconfigure $fd_sm -encoding utf-8
                puts -nonewline $fd_pcm [read $fd_sm]
                close $fd_sm
        } else {