git-gui: Translate standard encoding names to Tcl ones

diff --git a/lib/commit.tcl b/lib/commit.tcl
index 0f3b16dfeb05e4451df3204e94106c0c7b53cbc4..75b13a0d99c03634026b6cf56233f36ce951faa2 100644 (file)
--- a/lib/commit.tcl
+++ b/lib/commit.tcl
@@ -37,9 +37,14 @@ You are currently in the middle of a merge that has not been fully completed.  Y
                                        set enc [string tolower [string range $line 9 end]]
                                }
                        }
-                       set msg [encoding convertfrom $enc [read $fd]]
-                       set msg [string trim $msg]
+                       set msg [read $fd]
                        close $fd
+
+                       set enc [tcl_encoding $enc]
+                       if {$enc ne {}} {
+                               set msg [encoding convertfrom $enc $msg]
+                       }
+                       set msg [string trim $msg]
                } err]} {
                error_popup "Error loading commit data for amend:\n\n$err"
                return
@@ -287,11 +292,18 @@ A rescan will be automatically started now.
        #
        set msg_p [gitdir COMMIT_EDITMSG]
        set msg_wt [open $msg_p w]
+       fconfigure $msg_wt -translation lf
        if {[catch {set enc $repo_config(i18n.commitencoding)}]} {
                set enc utf-8
        }
-       fconfigure $msg_wt -encoding binary -translation binary
-       puts -nonewline $msg_wt [encoding convertto $enc $msg]
+       set use_enc [tcl_encoding $enc]
+       if {$use_enc ne {}} {
+               fconfigure $msg_wt -encoding $use_enc
+       } else {
+               puts stderr "warning: Tcl does not support encoding '$enc'."
+               fconfigure $msg_wt -encoding utf-8
+       }
+       puts -nonewline $msg_wt $msg
        close $msg_wt
 
        # -- Create the commit.