utoload/git.vim: print error messages with echom

autoload/magit/git.vim

@@ -171,8 +171,11 @@ function! magit#git#git_add(filename)
 	let git_cmd=s:git_cmd . " add --no-ignore-removal -- " . a:filename
 	silent let git_result=magit#utils#system(git_cmd)
 	if ( v:shell_error != 0 )
-		echoerr "Git error: " . git_result
-		echoerr "Git cmd: " . git_cmd
+		echohl WarningMsg
+		echom "Git error: " . git_result
+		echom "Git cmd: " . git_cmd
+		echohl None
+		throw 'add error'
 	endif
 endfunction
 
@@ -184,8 +187,11 @@ function! magit#git#git_checkout(filename)
 	let git_cmd=s:git_cmd . " checkout -- " . a:filename
 	silent let git_result=magit#utils#system(git_cmd)
 	if ( v:shell_error != 0 )
-		echoerr "Git error: " . git_result
-		echoerr "Git cmd: " . git_cmd
+		echohl WarningMsg
+		echom "Git error: " . git_result
+		echom "Git cmd: " . git_cmd
+		echohl None
+		throw 'checkout error'
 	endif
 endfunction
 
@@ -197,8 +203,11 @@ function! magit#git#git_reset(filename)
 	let git_cmd=s:git_cmd . " reset HEAD -- " . a:filename
 	silent let git_result=magit#utils#system(git_cmd)
 	if ( v:shell_error != 0 )
-		echoerr "Git error: " . git_result
-		echoerr "Git cmd: " . git_cmd
+		echohl WarningMsg
+		echom "Git error: " . git_result
+		echom "Git cmd: " . git_cmd
+		echohl None
+		throw 'reset error'
 	endif
 endfunction
 
@@ -216,10 +225,13 @@ function! magit#git#git_apply(header, selection)
 	let git_cmd=s:git_cmd . " apply --recount --no-index --cached -"
 	silent let git_result=magit#utils#system(git_cmd, selection)
 	if ( v:shell_error != 0 )
-		echoerr "Git error: " . git_result
-		echoerr "Git cmd: " . git_cmd
-		echoerr "Tried to aply this"
-		echoerr string(selection)
+		echohl WarningMsg
+		echom "Git error: " . git_result
+		echom "Git cmd: " . git_cmd
+		echom "Tried to aply this"
+		echom string(selection)
+		echohl None
+		throw 'apply error'
 	endif
 endfunction
 
@@ -242,9 +254,12 @@ function! magit#git#git_unapply(header, selection, mode)
 		\ s:git_cmd . " apply --recount --no-index " . cached_flag . " --reverse - ",
 		\ selection)
 	if ( v:shell_error != 0 )
-		echoerr "Git error: " . git_result
-		echoerr "Tried to unaply this"
-		echoerr string(selection)
+		echohl WarningMsg
+		echom "Git error: " . git_result
+		echom "Tried to unaply this"
+		echom string(selection)
+		echohl None
+		throw 'unapply error'
 	endif
 endfunction