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2023-12-26treewide: remove unnecessary includes in source filesElijah Newren
Each of these were checked with gcc -E -I. ${SOURCE_FILE} | grep ${HEADER_FILE} to ensure that removing the direct inclusion of the header actually resulted in that header no longer being included at all (i.e. that no other header pulled it in transitively). ...except for a few cases where we verified that although the header was brought in transitively, nothing from it was directly used in that source file. These cases were: * builtin/credential-cache.c * builtin/pull.c * builtin/send-pack.c Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-09-20Merge branch 'pw/diff-no-index-from-named-pipes'Junio C Hamano
"git diff --no-index -R <(one) <(two)" did not work correctly, which has been corrected. * pw/diff-no-index-from-named-pipes: diff --no-index: fix -R with stdin
2023-09-11diff --no-index: fix -R with stdinRené Scharfe
When -R is given, queue_diff() swaps the mode and name variables of the two files to produce a reverse diff. 1e3f26542a (diff --no-index: support reading from named pipes, 2023-07-05) added variables that indicate whether files are special, i.e named pipes or - for stdin. These new variables were not swapped, though, which broke the handling of stdin with with -R. Swap them like the other metadata variables. Reported-by: Martin Storsjö <martin@martin.st> Signed-off-by: René Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-08-21diff: drop useless "status" parameter from diff_result_code()Jeff King
Many programs use diff_result_code() to get a user-visible program exit code from a diff result (e.g., checking opts.found_changes if --exit-code was requested). This function also takes a "status" parameter, which seems at first glance that it could be used to propagate an error encountered when computing the diff. But it doesn't work that way: - negative values are passed through as-is, but are not appropriate as program exit codes - when --exit-code or --check is in effect, we _ignore_ the passed-in status completely. So a failed diff which did not have a chance to set opts.found_changes would erroneously report "success, no changes" instead of propagating the error. After recent cleanups, neither of these bugs is possible to trigger, as every caller just passes in "0". So rather than fixing them, we can simply drop the useless parameter instead. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-07-05diff --no-index: support reading from named pipesPhillip Wood
In some shells, such as bash and zsh, it's possible to use a command substitution to provide the output of a command as a file argument to another process, like so: diff -u <(printf "a\nb\n") <(printf "a\nc\n") However, this syntax does not produce useful results with "git diff --no-index". On macOS, the arguments to the command are named pipes under /dev/fd, and git diff doesn't know how to handle a named pipe. On Linux, the arguments are symlinks to pipes, so git diff "helpfully" diffs these symlinks, comparing their targets like "pipe:[1234]" and "pipe:[5678]". To address this "diff --no-index" is changed so that if a path given on the commandline is a named pipe or a symbolic link that resolves to a named pipe then we read the data to diff from that pipe. This is implemented by generalizing the code that already exists to handle reading from stdin when the user passes the path "-". If the user tries to compare a named pipe to a directory then we die as we do when trying to compare stdin to a directory. As process substitution is not support by POSIX this change is tested by using a pipe and a symbolic link to a pipe. Helped-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-07-05diff --no-index: die on error reading stdinPhillip Wood
If there is an error when reading from stdin then "diff --no-index" prints an error message but continues to try and diff a file named "-" resulting in an error message that looks like error: error while reading from stdin: Invalid argument fatal: stat '-': No such file or directory assuming that no file named "-" exists. If such a file exists it prints the first error message and generates the diff from that file which is not what the user wanted. Instead just die() straight away if we cannot read from stdin. Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-07-05diff --no-index: refuse to compare stdin to a directoryPhillip Wood
When the user runs git diff --no-index file directory we follow the behavior of POSIX diff and rewrite the arguments as git diff --no-index file directory/file Doing that when "file" is "-" (which means "read from stdin") does not make sense so we should error out if the user asks us to compare "-" to a directory. This matches the behavior of GNU diff and diff on *BSD. Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-04-11treewide: remove cache.h inclusion due to object.h changesElijah Newren
Signed-off-by: Elijah Newren <newren@gmail.com> Acked-by: Calvin Wan <calvinwan@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-03-21abspath.h: move absolute path functions from cache.hElijah Newren
This is another step towards letting us remove the include of cache.h in strbuf.c. It does mean that we also need to add includes of abspath.h in a number of C files. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-03-21treewide: be explicit about dependence on gettext.hElijah Newren
Dozens of files made use of gettext functions, without explicitly including gettext.h. This made it more difficult to find which files could remove a dependence on cache.h. Make C files explicitly include gettext.h if they are using it. However, while compat/fsmonitor/fsm-ipc-darwin.c should also gain an include of gettext.h, it was left out to avoid conflicting with an in-flight topic. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-02-24Remove unnecessary includes of builtin.hElijah Newren
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-12-01diff: factor out add_diff_options()René Scharfe
Add a function for appending the parseopts member of struct diff_options to a struct option array. Use it in two sites instead of accessing the parseopts member directly. Decoupling callers from diff internals like that allows us to change the latter. Signed-off-by: René Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-09-07diff-no-index: simplify argv index calculationRené Scharfe
Since 16bb3d714d (diff --no-index: use parse_options() instead of diff_opt_parse(), 2019-03-24) argc must be 2 if we reach the loop, i.e. argc - 2 == 0. Remove that inconsequential term. Signed-off-by: René Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-09-07diff-no-index: release prefixed filenamesRené Scharfe
Callers of prefix_filename() are responsible for freeing its result. Remember the returned strings and release them to appease leak checkers. Signed-off-by: René Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-09-07diff-no-index: release strbuf on queue errorRené Scharfe
The strbuf is small and we are about to exit, so we could leave its cleanup to the OS. If we release it explicitly at all, however, then we should do it on early exit as well. Move the strbuf_release call to a new cleanup section at the end and make sure all execution paths go through it. Suggested-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: René Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-05-19Merge branch 'en/dir-traversal'Junio C Hamano
"git clean" and "git ls-files -i" had confusion around working on or showing ignored paths inside an ignored directory, which has been corrected. * en/dir-traversal: dir: introduce readdir_skip_dot_and_dotdot() helper dir: update stale description of treat_directory() dir: traverse into untracked directories if they may have ignored subfiles dir: avoid unnecessary traversal into ignored directory t3001, t7300: add testcase showcasing missed directory traversal t7300: add testcase showing unnecessary traversal into ignored directory ls-files: error out on -i unless -o or -c are specified dir: report number of visited directories and paths with trace2 dir: convert trace calls to trace2 equivalents
2021-05-12dir: introduce readdir_skip_dot_and_dotdot() helperElijah Newren
Many places in the code were doing while ((d = readdir(dir)) != NULL) { if (is_dot_or_dotdot(d->d_name)) continue; ...process d... } Introduce a readdir_skip_dot_and_dotdot() helper to make that a one-liner: while ((d = readdir_skip_dot_and_dotdot(dir)) != NULL) { ...process d... } This helper particularly simplifies checks for empty directories. Also use this helper in read_cached_dir() so that our statistics are consistent across platforms. (In other words, read_cached_dir() should have been using is_dot_or_dotdot() and skipping such entries, but did not and left it to treat_path() to detect and mark such entries as path_none.) Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-04-27hash: provide per-algorithm null OIDsbrian m. carlson
Up until recently, object IDs did not have an algorithm member, only a hash. Consequently, it was possible to share one null (all-zeros) object ID among all hash algorithms. Now that we're going to be handling objects from multiple hash algorithms, it's important to make sure that all object IDs have a correct algorithm field. Introduce a per-algorithm null OID, and add it to struct hash_algo. Introduce a wrapper function as well, and use it everywhere we used to use the null_oid constant. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-25Merge branch 'nd/diff-parseopt-4'Junio C Hamano
Fourth batch to teach the diff machinery to use the parse-options API. * nd/diff-parseopt-4: am: avoid diff_opt_parse() diff --no-index: use parse_options() instead of diff_opt_parse() range-diff: use parse_options() instead of diff_opt_parse() diff.c: allow --no-color-moved-ws diff-parseopt: convert --color-moved-ws diff-parseopt: convert --[no-]color-moved diff-parseopt: convert --inter-hunk-context diff-parseopt: convert --no-prefix diff-parseopt: convert --line-prefix diff-parseopt: convert --[src|dst]-prefix diff-parseopt: convert --[no-]abbrev diff-parseopt: convert --diff-filter diff-parseopt: convert --find-object diff-parseopt: convert -O diff-parseopt: convert --pickaxe-all|--pickaxe-regex diff-parseopt: convert -S|-G diff-parseopt: convert -l diff-parseopt: convert -z diff-parseopt: convert --ita-[in]visible-in-index diff-parseopt: convert --ws-error-highlight
2019-03-24diff --no-index: use parse_options() instead of diff_opt_parse()Nguyễn Thái Ngọc Duy
While at there, move exit() back to the caller. It's easier to see the flow that way than burying it in diff-no-index.c Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-02-24diff: reuse diff setup for --no-index caseJeff King
When "--no-index" is in effect (or implied by the arguments), git-diff jumps early to a special code path to perform that diff. This means we miss out on some settings like enabling --ext-diff and --textconv by default. Let's jump to the no-index path _after_ we've done more setup on rev.diffopt. Since some of the options don't affect us (e.g., items related to the index), let's re-order the setup into two blocks (see the in-code comments). Note that we also need to stop re-initializing the diffopt struct in diff_no_index(). This should not be necessary, as it will already have been initialized by cmd_diff() (and there are no other callers). That in turn lets us drop the "repository" argument from diff_no_index (which never made much sense, since the whole point is that you don't need a repository). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-21diff.c: remove implicit dependency on the_indexNguyễn Thái Ngọc Duy
A new variant repo_diff_setup() is added that takes 'struct repository *' and diff_setup() becomes a thin macro around it that is protected by NO_THE_REPOSITORY_COMPATIBILITY_MACROS, similar to NO_THE_INDEX_.... The plan is these macros will always be defined for all library files and the macros are only accessible in builtin/ Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-11-01diff: make struct diff_flags members lowercaseBrandon Williams
Now that the flags stored in struct diff_flags are being accessed directly and not through macros, change all struct members from being uppercase to lowercase. This conversion is done using the following semantic patch: @@ expression E; @@ - E.RECURSIVE + E.recursive @@ expression E; @@ - E.TREE_IN_RECURSIVE + E.tree_in_recursive @@ expression E; @@ - E.BINARY + E.binary @@ expression E; @@ - E.TEXT + E.text @@ expression E; @@ - E.FULL_INDEX + E.full_index @@ expression E; @@ - E.SILENT_ON_REMOVE + E.silent_on_remove @@ expression E; @@ - E.FIND_COPIES_HARDER + E.find_copies_harder @@ expression E; @@ - E.FOLLOW_RENAMES + E.follow_renames @@ expression E; @@ - E.RENAME_EMPTY + E.rename_empty @@ expression E; @@ - E.HAS_CHANGES + E.has_changes @@ expression E; @@ - E.QUICK + E.quick @@ expression E; @@ - E.NO_INDEX + E.no_index @@ expression E; @@ - E.ALLOW_EXTERNAL + E.allow_external @@ expression E; @@ - E.EXIT_WITH_STATUS + E.exit_with_status @@ expression E; @@ - E.REVERSE_DIFF + E.reverse_diff @@ expression E; @@ - E.CHECK_FAILED + E.check_failed @@ expression E; @@ - E.RELATIVE_NAME + E.relative_name @@ expression E; @@ - E.IGNORE_SUBMODULES + E.ignore_submodules @@ expression E; @@ - E.DIRSTAT_CUMULATIVE + E.dirstat_cumulative @@ expression E; @@ - E.DIRSTAT_BY_FILE + E.dirstat_by_file @@ expression E; @@ - E.ALLOW_TEXTCONV + E.allow_textconv @@ expression E; @@ - E.TEXTCONV_SET_VIA_CMDLINE + E.textconv_set_via_cmdline @@ expression E; @@ - E.DIFF_FROM_CONTENTS + E.diff_from_contents @@ expression E; @@ - E.DIRTY_SUBMODULES + E.dirty_submodules @@ expression E; @@ - E.IGNORE_UNTRACKED_IN_SUBMODULES + E.ignore_untracked_in_submodules @@ expression E; @@ - E.IGNORE_DIRTY_SUBMODULES + E.ignore_dirty_submodules @@ expression E; @@ - E.OVERRIDE_SUBMODULE_CONFIG + E.override_submodule_config @@ expression E; @@ - E.DIRSTAT_BY_LINE + E.dirstat_by_line @@ expression E; @@ - E.FUNCCONTEXT + E.funccontext @@ expression E; @@ - E.PICKAXE_IGNORE_CASE + E.pickaxe_ignore_case @@ expression E; @@ - E.DEFAULT_FOLLOW_RENAMES + E.default_follow_renames Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-11-01diff: remove DIFF_OPT_SET macroBrandon Williams
Remove the `DIFF_OPT_SET` macro and instead set the flags directly. This conversion is done using the following semantic patch: @@ expression E; identifier fld; @@ - DIFF_OPT_SET(&E, fld) + E.flags.fld = 1 @@ type T; T *ptr; identifier fld; @@ - DIFF_OPT_SET(ptr, fld) + ptr->flags.fld = 1 Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-11-01diff: remove DIFF_OPT_TST macroBrandon Williams
Remove the `DIFF_OPT_TST` macro and instead access the flags directly. This conversion is done using the following semantic patch: @@ expression E; identifier fld; @@ - DIFF_OPT_TST(&E, fld) + E.flags.fld @@ type T; T *ptr; identifier fld; @@ - DIFF_OPT_TST(ptr, fld) + ptr->flags.fld Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-02diff: convert fill_filespec to struct object_idBrandon Williams
Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-21prefix_filename: return newly allocated stringJeff King
The prefix_filename() function returns a pointer to static storage, which makes it easy to use dangerously. We already fixed one buggy caller in hash-object recently, and the calls in apply.c are suspicious (I didn't dig in enough to confirm that there is a bug, but we call the function once in apply_all_patches() and then again indirectly from parse_chunk()). Let's make it harder to get wrong by allocating the return value. For simplicity, we'll do this even when the prefix is empty (and we could just return the original file pointer). That will cause us to allocate sometimes when we wouldn't otherwise need to, but this function isn't called in performance critical code-paths (and it already _might_ allocate on any given call, so a caller that cares about performance is questionable anyway). The downside is that the callers need to remember to free() the result to avoid leaking. Most of them already used xstrdup() on the result, so we know they are OK. The remainder have been converted to use free() as appropriate. I considered retaining a prefix_filename_unsafe() for cases where we know the static lifetime is OK (and handling the cleanup is awkward). This is only a handful of cases, though, and it's not worth the mental energy in worrying about whether the "unsafe" variant is OK to use in any situation. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-21prefix_filename: drop length parameterJeff King
This function takes the prefix as a ptr/len pair, but in every caller the length is exactly strlen(ptr). Let's simplify the interface and just take the string. This saves callers specifying it (and in some cases handling a NULL prefix). In a handful of cases we had the length already without calling strlen, so this is technically slower. But it's not likely to matter (after all, if the prefix is non-empty we'll allocate and copy it into a buffer anyway). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-30diff: use SWAP macroRené Scharfe
Use the macro SWAP to exchange the value of pairs of variables instead of swapping them manually with the help of a temporary variable. The resulting code is shorter and easier to read. The two cases were not transformed by the semantic patch swap.cocci because it's extra careful and handles only cases where the types of all variables are the same -- and here we swap two ints and use an unsigned temporary variable for that. Nevertheless the conversion is safe, as the value range is preserved with and without the patch. Signed-off-by: Rene Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-30use SWAP macroRené Scharfe
Apply the semantic patch swap.cocci to convert hand-rolled swaps to use the macro SWAP. The resulting code is shorter and easier to read, the object code is effectively unchanged. The patch for object.c had to be hand-edited in order to preserve the comment before the change; Coccinelle tried to eat it for some reason. Signed-off-by: Rene Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-21Merge branch 'jk/setup-sequence-update'Junio C Hamano
There were numerous corner cases in which the configuration files are read and used or not read at all depending on the directory a Git command was run, leading to inconsistent behaviour. The code to set-up repository access at the beginning of a Git process has been updated to fix them. * jk/setup-sequence-update: t1007: factor out repeated setup init: reset cached config when entering new repo init: expand comments explaining config trickery config: only read .git/config from configured repos test-config: setup git directory t1302: use "git -C" pager: handle early config pager: use callbacks instead of configset pager: make pager_program a file-local static pager: stop loading git_default_config() pager: remove obsolete comment diff: always try to set up the repository diff: handle --no-index prefixes consistently diff: skip implicit no-index check when given --no-index patch-id: use RUN_SETUP_GENTLY hash-object: always try to set up the git repository
2016-09-13diff: handle --no-index prefixes consistentlyJeff King
If we see an explicit "git diff --no-index ../foo ../bar", then we do not set up the git repository at all (we already know we are in --no-index mode, so do not have to check "are we in a repository?"), and hence have no "prefix" within the repository. A patch generated by this command will have the filenames "a/../foo" and "b/../bar", no matter which directory we are in with respect to any repository. However, in the implicit case, where we notice that the files are outside the repository, we will have chdir()'d to the top-level of the repository. We then feed the prefix back to the diff machinery. As a result, running the same diff from a subdirectory will result in paths that look like "a/subdir/../../foo". Besides being unnecessarily long, this may also be confusing to the user: they don't care about the subdir or the repository at all; it's just where they happened to be when running the command. We should treat this the same as the explicit --no-index case. One way to address this would be to chdir() back to the original path before running our diff. However, that's a bit hacky, as we would also need to adjust $GIT_DIR, which could be a relative path from our top-level. Instead, we can reuse the diff machinery's RELATIVE_NAME option, which automatically strips off the prefix. Note that this _also_ restricts the diff to this relative prefix, but that's OK for our purposes: we queue our own diff pairs manually, and do not rely on that part of the diff code. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-05-09diff-no-index.c: use error_errno()Nguyễn Thái Ngọc Duy
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-02-03Merge branch 'nd/diff-with-path-params'Junio C Hamano
A few options of "git diff" did not work well when the command was run from a subdirectory. * nd/diff-with-path-params: diff: make -O and --output work in subdirectory diff-no-index: do not take a redundant prefix argument
2016-01-21diff: make -O and --output work in subdirectoryDuy Nguyen
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-01-21diff-no-index: do not take a redundant prefix argumentNguyễn Thái Ngọc Duy
Prefix is already set up in "revs". The same prefix should be used for all options parsing. So kill the last argument. This patch does not actually change anything because the only caller does use the same prefix for init_revisions() and diff_no_index(). Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-10-05use strbuf_complete to conditionally append slashJeff King
When working with paths in strbufs, we frequently want to ensure that a directory contains a trailing slash before appending to it. We can shorten this code (and make the intent more obvious) by calling strbuf_complete. Most of these cases are trivially identical conversions, but there are two things to note: - in a few cases we did not check that the strbuf is non-empty (which would lead to an out-of-bounds memory access). These were generally not triggerable in practice, either from earlier assertions, or typically because we would have just fed the strbuf to opendir(), which would choke on an empty path. - in a few cases we indexed the buffer with "original_len" or similar, rather than the current sb->len, and it is not immediately obvious from the diff that they are the same. In all of these cases, I manually verified that the strbuf does not change between the assignment and the strbuf_complete call. This does not convert cases which look like: if (sb->len && !is_dir_sep(sb->buf[sb->len - 1])) strbuf_addch(sb, '/'); as those are obviously semantically different. Some of these cases arguably should be doing that, but that is out of scope for this change, which aims purely for cleanup with no behavior change (and at least it will make such sites easier to find and examine in the future, as we can grep for strbuf_complete). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-03-26diff-no-index: align D/F handling with that of normal GitJunio C Hamano
When a commit changes a path P that used to be a file to a directory and creates a new path P/X in it, "git show" would say that file P was removed and file P/X was created for such a commit. However, if we compare two directories, D1 and D2, where D1 has a file D1/P in it and D2 has a directory D2/P under which there is a file D2/P/X, and ask "git diff --no-index D1 D2" to show their differences, we simply get a refusal "file/directory conflict". Surely, that may be what GNU diff does, but we can do better and it is easy to do so. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-03-26diff-no-index: DWIM "diff D F" into "diff D/F F"Junio C Hamano
"git diff --no-index" was supposed to be a poor-man's approach to allow using Git diff goodies outside of a Git repository, without having to patch mainstream diff implementations. Unlike a POSIX diff that treats "diff D F" (or "diff F D") as a request to compare D/F and F (or F and D/F) when D is a directory and F is a file, however, we did not accept such a command line and instead barfed with "file/directory conflict". Imitate what POSIX diff does and append the basename of the file after the name of the directory before comparing. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-04-03Merge branch 'jc/fix-diff-no-index-diff-opt-parse'Junio C Hamano
"diff --no-index -Mq a b" fell into an infinite loop. * jc/fix-diff-no-index-diff-opt-parse: diff-no-index: correctly diagnose error return from diff_opt_parse()
2014-03-31diff-no-index: correctly diagnose error return from diff_opt_parse()Junio C Hamano
diff_opt_parse() returns the number of options parsed, or often returns error() which is defined to return -1. Yes, return value of 0 is "I did not process that option at all", which should cause the caller to say that, but negative return should not be forgotten. This bug caused "diff --no-index" to infinitely show the same error message because the returned value was used to decrement the loop control variable, e.g. $ git diff --no-index --color=words a b error: option `color' expects "always", "auto", or "never" error: option `color' expects "always", "auto", or "never" ... Instead, make it act like so: $ git diff --no-index --color=words a b error: option `color' expects "always", "auto", or "never" fatal: invalid diff option/value: --color=words Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-25Merge branch 'bb/diff-no-index-dotdot'Junio C Hamano
* bb/diff-no-index-dotdot: diff-no-index: replace manual "."/".." check with is_dot_or_dotdot() diff-no-index: rename read_directory()
2014-03-19diff-no-index: replace manual "."/".." check with is_dot_or_dotdot()Brian Bourn
Helped-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Brian Bourn <ba.bourn@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-19diff-no-index: rename read_directory()Brian Bourn
In the next patch, we will replace a manual checking of "." or ".." with a call to is_dot_or_dotdot() defined in dir.h. The private function read_directory() defined in this file will conflict with the global function declared there when we do so. As a preparatory step, rename the private read_directory() to avoid the name collision. Helped-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Brian Bourn <ba.bourn@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-07Merge branch 'jc/hold-diff-remove-q-synonym-for-no-deletion'Junio C Hamano
Remove a confusing and deprecated "-q" option from "git diff-files"; "git diff-files --diff-filter=d" can be used instead.
2013-12-12diff: move no-index detection to builtin/diff.cThomas Gummerer
Currently the --no-index option is parsed in diff_no_index(). Move the detection if a no-index diff should be executed to builtin/diff.c, where we can use it for executing diff_no_index() conditionally. This will also allow us to execute other operations conditionally, which will be done in the next patch. There are no functional changes. Helped-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-09-17Merge branch 'dw/diff-no-index-doc'Junio C Hamano
When the user types "git diff" outside a working tree, thinking he is inside one, the current error message that is a single-liner "usage: git diff --no-index <path> <path>" may not be sufficient to make him realize the mistake. Add "Not a git repository" to the error message when we fell into the "--no-index" mode without an explicit command line option to instruct us to do so. * dw/diff-no-index-doc: diff --no-index: describe in a separate paragraph diff --no-index: clarify operation when not inside a repository
2013-09-09Merge branch 'jc/diff-filter-negation'Junio C Hamano
Teach "git diff --diff-filter" to express "I do not want to see these classes of changes" more directly by listing only the unwanted ones in lowercase (e.g. "--diff-filter=d" will show everything but deletion) and deprecate "diff-files -q" which did the same thing as "--diff-filter=d". * jc/diff-filter-negation: diff: deprecate -q option to diff-files diff: allow lowercase letter to specify what change class to exclude diff: reject unknown change class given to --diff-filter diff: preparse --diff-filter string argument diff: factor out match_filter() diff: pass the whole diff_options to diffcore_apply_filter()
2013-08-22diff --no-index: clarify operation when not inside a repositoryDale R. Worley
Clarify documentation for "diff --no-index". State that when not inside a repository, --no-index is implied and two arguments are mandatory. Clarify error message from diff-no-index to inform user that CWD is not inside a repository and thus two arguments are mandatory. Signed-off-by: Dale Worley <worley@ariadne.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-19diff: remove "diff-files -q" in a version of Git in a distant futureJunio C Hamano
This was inherited from "show-diff -q" that was invented to tell comparison between the index and the working tree to ignore only removals in 2005. These days, it is spelled as "--diff-filter=d". Signed-off-by: Junio C Hamano <gitster@pobox.com>
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