Merge branch 'fr/vimdiff-layout'

Reimplement "vimdiff[123]" mergetool drivers with a more generic
layout mechanism.

* fr/vimdiff-layout:
  mergetools: add description to all diff/merge tools
  vimdiff: add tool documentation
  vimdiff: integrate layout tests in the unit tests framework ('t' folder)
  vimdiff: new implementation with layout support

1 files changed, 9 insertions, 1 deletions

diff --git a/git-mergetool--lib.sh b/git-mergetool--lib.sh
index 542a6a75eb..9f99201bcc 100644
--- a/git-mergetool--lib.sh
+++ b/git-mergetool--lib.sh
@@ -63,7 +63,7 @@ $(list_tool_variants)"
 					preamble=
 				fi
 				shown_any=yes
-				printf "%s%s\n" "$per_line_prefix" "$toolname"
+				printf "%s%-15s  %s\n" "$per_line_prefix" "$toolname" $(diff_mode && diff_cmd_help "$toolname" || merge_cmd_help "$toolname")
 			fi
 		done
 
@@ -162,10 +162,18 @@ setup_tool () {
 		return 1
 	}
 
+	diff_cmd_help () {
+		return 0
+	}
+
 	merge_cmd () {
 		return 1
 	}
 
+	merge_cmd_help () {
+		return 0
+	}
+
 	hide_resolved_enabled () {
 		return 0
 	}