From d173e799ea8fae7d6e4649b763d32d5f0ba82011 Mon Sep 17 00:00:00 2001 From: Stefan Beller Date: Tue, 13 Nov 2018 13:33:57 -0800 Subject: [PATCH] diff: align move detection error handling with other options This changes the error handling for the options --color-moved-ws and --color-moved-ws to be like the rest of the options. Move the die() call out of parse_color_moved_ws into the parsing of command line options. As the function returns a bit field, change its signature to return an unsigned instead of an int; add a new bit to signal errors. Once the error is signaled, we discard the other bits, such that it doesn't matter if the error bit overlaps with any other bit. Signed-off-by: Stefan Beller Signed-off-by: Junio C Hamano --- diff.c | 25 ++++++++++++++++--------- diff.h | 3 ++- t/t4015-diff-whitespace.sh | 18 ++++++++++++++++++ 3 files changed, 36 insertions(+), 10 deletions(-) diff --git a/diff.c b/diff.c index 8647db3d30..d7d467b605 100644 --- a/diff.c +++ b/diff.c @@ -291,7 +291,7 @@ static int parse_color_moved(const char *arg) return error(_("color moved setting must be one of 'no', 'default', 'blocks', 'zebra', 'dimmed-zebra', 'plain'")); } -static int parse_color_moved_ws(const char *arg) +static unsigned parse_color_moved_ws(const char *arg) { int ret = 0; struct string_list l = STRING_LIST_INIT_DUP; @@ -312,15 +312,19 @@ static int parse_color_moved_ws(const char *arg) ret |= XDF_IGNORE_WHITESPACE; else if (!strcmp(sb.buf, "allow-indentation-change")) ret |= COLOR_MOVED_WS_ALLOW_INDENTATION_CHANGE; - else - error(_("ignoring unknown color-moved-ws mode '%s'"), sb.buf); + else { + ret |= COLOR_MOVED_WS_ERROR; + error(_("unknown color-moved-ws mode '%s', possible values are 'ignore-space-change', 'ignore-space-at-eol', 'ignore-all-space', 'allow-indentation-change'"), sb.buf); + } strbuf_release(&sb); } if ((ret & COLOR_MOVED_WS_ALLOW_INDENTATION_CHANGE) && - (ret & XDF_WHITESPACE_FLAGS)) - die(_("color-moved-ws: allow-indentation-change cannot be combined with other white space modes")); + (ret & XDF_WHITESPACE_FLAGS)) { + error(_("color-moved-ws: allow-indentation-change cannot be combined with other white space modes")); + ret |= COLOR_MOVED_WS_ERROR; + } string_list_clear(&l, 0); @@ -341,8 +345,8 @@ int git_diff_ui_config(const char *var, const char *value, void *cb) return 0; } if (!strcmp(var, "diff.colormovedws")) { - int cm = parse_color_moved_ws(value); - if (cm < 0) + unsigned cm = parse_color_moved_ws(value); + if (cm & COLOR_MOVED_WS_ERROR) return -1; diff_color_moved_ws_default = cm; return 0; @@ -5032,10 +5036,13 @@ int diff_opt_parse(struct diff_options *options, else if (skip_prefix(arg, "--color-moved=", &arg)) { int cm = parse_color_moved(arg); if (cm < 0) - die("bad --color-moved argument: %s", arg); + return error("bad --color-moved argument: %s", arg); options->color_moved = cm; } else if (skip_prefix(arg, "--color-moved-ws=", &arg)) { - options->color_moved_ws_handling = parse_color_moved_ws(arg); + unsigned cm = parse_color_moved_ws(arg); + if (cm & COLOR_MOVED_WS_ERROR) + return -1; + options->color_moved_ws_handling = cm; } else if (skip_to_optional_arg_default(arg, "--color-words", &options->word_regex, NULL)) { options->use_color = 1; options->word_diff = DIFF_WORDS_COLOR; diff --git a/diff.h b/diff.h index ce5e8a8183..9e8061ca29 100644 --- a/diff.h +++ b/diff.h @@ -225,7 +225,8 @@ struct diff_options { /* XDF_WHITESPACE_FLAGS regarding block detection are set at 2, 3, 4 */ #define COLOR_MOVED_WS_ALLOW_INDENTATION_CHANGE (1<<5) - int color_moved_ws_handling; + #define COLOR_MOVED_WS_ERROR (1<<0) + unsigned color_moved_ws_handling; struct repository *repo; }; diff --git a/t/t4015-diff-whitespace.sh b/t/t4015-diff-whitespace.sh index a9fb226c5a..9a3e4fdfec 100755 --- a/t/t4015-diff-whitespace.sh +++ b/t/t4015-diff-whitespace.sh @@ -1890,6 +1890,24 @@ test_expect_success 'compare whitespace delta across moved blocks' ' test_cmp expected actual ' +test_expect_success 'bogus settings in move detection erroring out' ' + test_must_fail git diff --color-moved=bogus 2>err && + test_i18ngrep "must be one of" err && + test_i18ngrep bogus err && + + test_must_fail git -c diff.colormoved=bogus diff 2>err && + test_i18ngrep "must be one of" err && + test_i18ngrep "from command-line config" err && + + test_must_fail git diff --color-moved-ws=bogus 2>err && + test_i18ngrep "possible values" err && + test_i18ngrep bogus err && + + test_must_fail git -c diff.colormovedws=bogus diff 2>err && + test_i18ngrep "possible values" err && + test_i18ngrep "from command-line config" err +' + test_expect_success 'compare whitespace delta incompatible with other space options' ' test_must_fail git diff \ --color-moved-ws=allow-indentation-change,ignore-all-space \