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[73.222.73.77]) by smtp.gmail.com with ESMTPSA id p128sm21728216pfp.30.2019.04.21.22.07.49 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Sun, 21 Apr 2019 22:07:50 -0700 (PDT) Date: Sun, 21 Apr 2019 22:07:48 -0700 From: Denton Liu To: Git Mailing List Cc: Johannes Schindelin , David Aguilar Subject: [PATCH 4/5] difftool: make --gui, --tool and --extcmd exclusive Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.11.4 (2019-03-13) Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org In git-difftool, these options specify which tool to ultimately run. As a result, they are logically conflicting. Explicitly disallow these options from being used together. Signed-off-by: Denton Liu --- builtin/difftool.c | 11 ++++++++++- t/t7800-difftool.sh | 8 ++++++++ 2 files changed, 18 insertions(+), 1 deletion(-) diff --git a/builtin/difftool.c b/builtin/difftool.c index a3ea60ea71..5ad39c9172 100644 --- a/builtin/difftool.c +++ b/builtin/difftool.c @@ -690,7 +690,7 @@ static int run_file_diff(int prompt, const char *prefix, int cmd_difftool(int argc, const char **argv, const char *prefix) { int use_gui_tool = 0, dir_diff = 0, prompt = -1, symlinks = 0, - tool_help = 0; + tool_help = 0, count = 0; static char *difftool_cmd = NULL, *extcmd = NULL; struct option builtin_difftool_options[] = { OPT_BOOL('g', "gui", &use_gui_tool, @@ -731,6 +731,15 @@ int cmd_difftool(int argc, const char **argv, const char *prefix) setenv(GIT_DIR_ENVIRONMENT, absolute_path(get_git_dir()), 1); setenv(GIT_WORK_TREE_ENVIRONMENT, absolute_path(get_git_work_tree()), 1); + if (use_gui_tool) + count++; + if (difftool_cmd) + count++; + if (extcmd) + count++; + if (count > 1) + die(_("--gui, --tool and --extcmd are exclusive")); + if (use_gui_tool && diff_gui_tool && *diff_gui_tool) setenv("GIT_DIFF_TOOL", diff_gui_tool, 1); else if (difftool_cmd) { diff --git a/t/t7800-difftool.sh b/t/t7800-difftool.sh index bb9a7f4ff9..107f31213d 100755 --- a/t/t7800-difftool.sh +++ b/t/t7800-difftool.sh @@ -705,4 +705,12 @@ test_expect_success SYMLINKS 'difftool --dir-diff handles modified symlinks' ' test_cmp expect actual ' +test_expect_success 'difftool --gui, --tool and --extcmd are exclusive' ' + difftool_test_setup && + test_must_fail git difftool --gui --tool=test-tool && + test_must_fail git difftool --gui --extcmd=cat && + test_must_fail git difftool --tool=test-tool --extcmd=cat && + test_must_fail git difftool --gui --tool=test-tool --extcmd=cat +' + test_done -- 2.21.0.967.gf85e14fd49