1 /* Copyright (c) 2006 Jonas Fonseca <fonseca@diku.dk>
2 * See license info at the bottom. */
9 * tig - text-mode interface for git
15 * tig [options] [--] [git log options]
16 * tig [options] log [git log options]
17 * tig [options] diff [git diff options]
18 * tig [options] show [git show options]
19 * tig [options] < [git command output]
23 * Browse changes in a git repository. Additionally, tig(1) can also act
24 * as a pager for output of various git commands.
26 * When browsing repositories, tig(1) uses the underlaying git commands
27 * to present the user with various views, such as summarized commit log
28 * and showing the commit with the log message, diffstat, and the diff.
30 * Using tig(1) as a pager, it will display input from stdin and try
35 #define VERSION "tig-0.1"
55 static void die(const char *err, ...);
56 static void report(const char *msg, ...);
57 static void set_nonblocking_input(bool loading);
59 #define ABS(x) ((x) >= 0 ? (x) : -(x))
60 #define MIN(x, y) ((x) < (y) ? (x) : (y))
62 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
63 #define STRING_SIZE(x) (sizeof(x) - 1)
65 #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */
66 #define SIZEOF_CMD 1024 /* Size of command buffer. */
68 /* This color name can be used to refer to the default term colors. */
69 #define COLOR_DEFAULT (-1)
71 #define TIG_HELP "(d)iff, (l)og, (m)ain, (q)uit, (h)elp, (Enter) show diff"
73 /* The format and size of the date column in the main view. */
74 #define DATE_FORMAT "%Y-%m-%d %H:%M"
75 #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ")
77 /* The default interval between line numbers. */
78 #define NUMBER_INTERVAL 1
82 #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3)
84 /* Some ascii-shorthands fitted into the ncurses namespace. */
86 #define KEY_RETURN '\r'
90 /* User action requests. */
92 /* Offset all requests to avoid conflicts with ncurses getch values. */
93 REQ_OFFSET = KEY_MAX + 1,
95 /* XXX: Keep the view request first and in sync with views[]. */
110 REQ_TOGGLE_LINE_NUMBERS,
123 REQ_SCROLL_LINE_DOWN,
125 REQ_SCROLL_PAGE_DOWN,
129 char *name; /* Ref name; tag or head names are shortened. */
130 char id[41]; /* Commit SHA1 ID */
131 unsigned int tag:1; /* Is it a tag? */
132 unsigned int next:1; /* For ref lists: are there more refs? */
136 char id[41]; /* SHA1 ID. */
137 char title[75]; /* The first line of the commit message. */
138 char author[75]; /* The author of the commit. */
139 struct tm time; /* Date from the author ident. */
140 struct ref **refs; /* Repository references; tags & branch heads. */
149 string_ncopy(char *dst, char *src, int dstlen)
151 strncpy(dst, src, dstlen - 1);
156 /* Shorthand for safely copying into a fixed buffer. */
157 #define string_copy(dst, src) \
158 string_ncopy(dst, src, sizeof(dst))
163 * NOTE: The following is a slightly modified copy of the git project's shell
164 * quoting routines found in the quote.c file.
166 * Help to copy the thing properly quoted for the shell safety. any single
167 * quote is replaced with '\'', any exclamation point is replaced with '\!',
168 * and the whole thing is enclosed in a
171 * original sq_quote result
172 * name ==> name ==> 'name'
173 * a b ==> a b ==> 'a b'
174 * a'b ==> a'\''b ==> 'a'\''b'
175 * a!b ==> a'\!'b ==> 'a'\!'b'
179 sq_quote(char buf[SIZEOF_CMD], size_t bufsize, const char *src)
183 #define BUFPUT(x) ( (bufsize < SIZEOF_CMD) && (buf[bufsize++] = (x)) )
186 while ((c = *src++)) {
187 if (c == '\'' || c == '!') {
207 /* Option and state variables. */
208 static bool opt_line_number = FALSE;
209 static int opt_num_interval = NUMBER_INTERVAL;
210 static int opt_tab_size = TABSIZE;
211 static enum request opt_request = REQ_VIEW_MAIN;
212 static char opt_cmd[SIZEOF_CMD] = "";
213 static FILE *opt_pipe = NULL;
215 /* Returns the index of log or diff command or -1 to exit. */
217 parse_options(int argc, char *argv[])
221 for (i = 1; i < argc; i++) {
226 * Start up in log view using the internal log command.
228 if (!strcmp(opt, "-l")) {
229 opt_request = REQ_VIEW_LOG;
235 * Start up in diff view using the internal diff command.
237 if (!strcmp(opt, "-d")) {
238 opt_request = REQ_VIEW_DIFF;
243 * -n[INTERVAL], --line-number[=INTERVAL]::
244 * Prefix line numbers in log and diff view.
245 * Optionally, with interval different than each line.
247 if (!strncmp(opt, "-n", 2) ||
248 !strncmp(opt, "--line-number", 13)) {
254 } else if (opt[STRING_SIZE("--line-number")] == '=') {
255 num = opt + STRING_SIZE("--line-number=");
259 opt_num_interval = atoi(num);
261 opt_line_number = TRUE;
266 * -t[NSPACES], --tab-size[=NSPACES]::
267 * Set the number of spaces tabs should be expanded to.
269 if (!strncmp(opt, "-t", 2) ||
270 !strncmp(opt, "--tab-size", 10)) {
276 } else if (opt[STRING_SIZE("--tab-size")] == '=') {
277 num = opt + STRING_SIZE("--tab-size=");
281 opt_tab_size = MIN(atoi(num), TABSIZE);
287 * Show version and exit.
289 if (!strcmp(opt, "-v") ||
290 !strcmp(opt, "--version")) {
291 printf("tig version %s\n", VERSION);
297 * End of tig(1) options. Useful when specifying commands
298 * for the main view. Example:
300 * $ tig -- --since=1.month
302 if (!strcmp(opt, "--")) {
309 * Open log view using the given git log options.
312 * Open diff view using the given git diff options.
315 * Open diff view using the given git show options.
317 if (!strcmp(opt, "log") ||
318 !strcmp(opt, "diff") ||
319 !strcmp(opt, "show")) {
320 opt_request = opt[0] == 'l'
321 ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
327 * $ tig tag-1.0..HEAD
330 if (opt[0] && opt[0] != '-')
333 die("unknown command '%s'", opt);
336 if (!isatty(STDIN_FILENO)) {
340 * If stdin is a pipe, any log or diff options will be ignored and the
341 * pager view will be opened loading data from stdin. The pager mode
342 * can be used for colorizing output from various git commands.
344 * Example on how to colorize the output of git-show(1):
348 opt_request = REQ_VIEW_PAGER;
351 } else if (i < argc) {
355 * Git command options
356 * ~~~~~~~~~~~~~~~~~~~
357 * All git command options specified on the command line will
358 * be passed to the given command and all will be shell quoted
359 * before they are passed to the shell.
361 * NOTE: If you specify options for the main view, you should
362 * not use the `--pretty` option as this option will be set
363 * automatically to the format expected by the main view.
365 * Example on how to open the log view and show both author and
366 * committer information:
368 * $ tig log --pretty=fuller
370 * See the "Specifying revisions" section below for an introduction
371 * to revision options supported by the git commands. For
372 * details on specific git command options, refer to the man
373 * page of the command in question.
376 if (opt_request == REQ_VIEW_MAIN)
377 /* XXX: This is vulnerable to the user overriding
378 * options required for the main view parser. */
379 string_copy(opt_cmd, "git log --stat --pretty=raw");
381 string_copy(opt_cmd, "git");
382 buf_size = strlen(opt_cmd);
384 while (buf_size < sizeof(opt_cmd) && i < argc) {
385 opt_cmd[buf_size++] = ' ';
386 buf_size = sq_quote(opt_cmd, buf_size, argv[i++]);
389 if (buf_size >= sizeof(opt_cmd))
390 die("command too long");
392 opt_cmd[buf_size] = 0;
401 * Line-oriented content detection.
405 /* Line type String to match Foreground Background Attributes
406 * --------- --------------- ---------- ---------- ---------- */ \
408 LINE(DIFF, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
409 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
410 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
411 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
412 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
413 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
414 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
415 LINE(DIFF_COPY, "copy ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
416 LINE(DIFF_RENAME, "rename ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
417 LINE(DIFF_SIM, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
418 LINE(DIFF_DISSIM, "dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
419 /* Pretty print commit header */ \
420 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
421 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
422 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
423 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
424 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
425 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
426 /* Raw commit header */ \
427 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
428 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
429 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
430 LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
431 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
433 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
434 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
436 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
437 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
438 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
439 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
440 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
441 LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
442 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
443 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
444 LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
445 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
446 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD),
449 #define LINE(type, line, fg, bg, attr) \
456 char *line; /* The start of line to match. */
457 int linelen; /* Size of string to match. */
458 int fg, bg, attr; /* Color and text attributes for the lines. */
461 static struct line_info line_info[] = {
462 #define LINE(type, line, fg, bg, attr) \
463 { (line), STRING_SIZE(line), (fg), (bg), (attr) }
468 static enum line_type
469 get_line_type(char *line)
471 int linelen = strlen(line);
474 for (type = 0; type < ARRAY_SIZE(line_info); type++)
475 /* Case insensitive search matches Signed-off-by lines better. */
476 if (linelen >= line_info[type].linelen &&
477 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
484 get_line_attr(enum line_type type)
486 assert(type < ARRAY_SIZE(line_info));
487 return COLOR_PAIR(type) | line_info[type].attr;
493 int default_bg = COLOR_BLACK;
494 int default_fg = COLOR_WHITE;
499 if (use_default_colors() != ERR) {
504 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
505 struct line_info *info = &line_info[type];
506 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
507 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
509 init_pair(type, fg, bg);
515 * ENVIRONMENT VARIABLES
516 * ---------------------
517 * Several options related to the interface with git can be configured
518 * via environment options.
520 * Repository references
521 * ~~~~~~~~~~~~~~~~~~~~~
522 * Commits that are referenced by tags and branch heads will be marked
523 * by the reference name surrounded by '[' and ']':
525 * 2006-03-26 19:42 Petr Baudis | [cogito-0.17.1] Cogito 0.17.1
527 * If you want to filter out certain directories under `.git/refs/`, say
528 * `tmp` you can do it by setting the following variable:
530 * $ TIG_LS_REMOTE="git ls-remote . | sed /\/tmp\//d" tig
532 * Or set the variable permanently in your environment.
535 * Set command for retrieving all repository references. The command
536 * should output data in the same format as git-ls-remote(1).
539 #define TIG_LS_REMOTE \
545 * It is possible to alter which commands are used for the different views.
546 * If for example you prefer commits in the main view to be sorted by date
547 * and only show 500 commits, use:
549 * $ TIG_MAIN_CMD="git log --date-order -n500 --pretty=raw %s" tig
551 * Or set the variable permanently in your environment.
553 * Notice, how `%s` is used to specify the commit reference. There can
554 * be a maximum of 5 `%s` ref specifications.
557 * The command used for the diff view. By default, git show is used
561 * The command used for the log view. If you prefer to have both
562 * author and committer shown in the log view be sure to pass
563 * `--pretty=fuller` to git log.
566 * The command used for the main view. Note, you must always specify
567 * the option: `--pretty=raw` since the main view parser expects to
571 #define TIG_DIFF_CMD \
572 "git show --patch-with-stat --find-copies-harder -B -C %s"
574 #define TIG_LOG_CMD \
575 "git log --cc --stat -n100 %s"
577 #define TIG_MAIN_CMD \
578 "git log --topo-order --stat --pretty=raw %s"
580 /* We silently ignore that the following are also exported. */
582 #define TIG_HELP_CMD \
583 "man tig 2> /dev/null"
585 #define TIG_PAGER_CMD \
592 * tig(1) presents various 'views' of a repository. Each view is based on output
593 * from an external command, most often 'git log', 'git diff', or 'git show'.
596 * Is the default view, and it shows a one line summary of each commit
597 * in the chosen list of revision. The summary includes commit date,
598 * author, and the first line of the log message. Additionally, any
599 * repository references, such as tags, will be shown.
602 * Presents a more rich view of the revision log showing the whole log
603 * message and the diffstat.
606 * Shows either the diff of the current working tree, that is, what
607 * has changed since the last commit, or the commit diff complete
608 * with log message, diffstat and diff.
611 * Is used for displaying both input from stdin and output from git
612 * commands entered in the internal prompt.
615 * Displays the information from the tig(1) man page. For the help view
616 * to work you need to have the tig(1) man page installed.
620 const char *name; /* View name */
621 char *cmd_fmt; /* Default command line format */
622 char *cmd_env; /* Command line set via environment */
623 char *id; /* Points to either of ref_{head,commit} */
624 size_t objsize; /* Size of objects in the line index */
627 /* What type of content being displayed. Used in the
630 /* Draw one line; @lineno must be < view->height. */
631 bool (*draw)(struct view *view, unsigned int lineno);
632 /* Read one line; updates view->line. */
633 bool (*read)(struct view *view, char *line);
634 /* Depending on view, change display based on current line. */
635 bool (*enter)(struct view *view);
638 char cmd[SIZEOF_CMD]; /* Command buffer */
639 char ref[SIZEOF_REF]; /* Hovered commit reference */
640 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
642 int height, width; /* The width and height of the main window */
643 WINDOW *win; /* The main window */
644 WINDOW *title; /* The title window living below the main window */
647 unsigned long offset; /* Offset of the window top */
648 unsigned long lineno; /* Current line number */
651 unsigned long lines; /* Total number of lines */
652 void **line; /* Line index; each line contains user data */
653 unsigned int digits; /* Number of digits in the lines member. */
660 static struct view_ops pager_ops;
661 static struct view_ops main_ops;
663 char ref_head[SIZEOF_REF] = "HEAD";
664 char ref_commit[SIZEOF_REF] = "HEAD";
666 #define VIEW_STR(name, cmd, env, ref, objsize, ops) \
667 { name, cmd, #env, ref, objsize, ops }
669 #define VIEW_(id, name, ops, ref, objsize) \
670 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, objsize, ops)
672 static struct view views[] = {
673 VIEW_(MAIN, "main", &main_ops, ref_head, sizeof(struct commit)),
674 VIEW_(DIFF, "diff", &pager_ops, ref_commit, sizeof(char)),
675 VIEW_(LOG, "log", &pager_ops, ref_head, sizeof(char)),
676 VIEW_(HELP, "help", &pager_ops, ref_head, sizeof(char)),
677 VIEW_(PAGER, "pager", &pager_ops, "static", sizeof(char)),
680 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
682 /* The display array of active views and the index of the current view. */
683 static struct view *display[2];
684 static unsigned int current_view;
686 #define foreach_view(view, i) \
687 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
691 redraw_view_from(struct view *view, int lineno)
693 assert(0 <= lineno && lineno < view->height);
695 for (; lineno < view->height; lineno++) {
696 if (!view->ops->draw(view, lineno))
700 redrawwin(view->win);
705 redraw_view(struct view *view)
708 redraw_view_from(view, 0);
715 struct view *base = display[0];
716 struct view *view = display[1] ? display[1] : display[0];
718 /* Setup window dimensions */
720 getmaxyx(stdscr, base->height, base->width);
722 /* Make room for the status window. */
726 /* Horizontal split. */
727 view->width = base->width;
728 view->height = SCALE_SPLIT_VIEW(base->height);
729 base->height -= view->height;
731 /* Make room for the title bar. */
735 /* Make room for the title bar. */
740 foreach_view (view, i) {
741 /* Keep the size of the all view windows one lager than is
742 * required. This makes current line management easier when the
743 * cursor will go outside the window. */
745 view->win = newwin(view->height + 1, 0, offset, 0);
747 die("Failed to create %s view", view->name);
749 scrollok(view->win, TRUE);
751 view->title = newwin(1, 0, offset + view->height, 0);
753 die("Failed to create title window");
756 wresize(view->win, view->height + 1, view->width);
757 mvwin(view->win, offset, 0);
758 mvwin(view->title, offset + view->height, 0);
762 offset += view->height + 1;
767 update_view_title(struct view *view)
769 if (view == display[current_view])
770 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
772 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
775 wmove(view->title, 0, 0);
777 /* [main] ref: 334b506... - commit 6 of 4383 (0%) */
780 wprintw(view->title, "[%s] %s", view->name, view->ref);
782 wprintw(view->title, "[%s]", view->name);
785 wprintw(view->title, " - %s %d of %d (%d%%)",
789 (view->lineno + 1) * 100 / view->lines);
792 wrefresh(view->title);
799 /* Scrolling backend */
801 do_scroll_view(struct view *view, int lines)
803 /* The rendering expects the new offset. */
804 view->offset += lines;
806 assert(0 <= view->offset && view->offset < view->lines);
809 /* Redraw the whole screen if scrolling is pointless. */
810 if (view->height < ABS(lines)) {
814 int line = lines > 0 ? view->height - lines : 0;
815 int end = line + ABS(lines);
817 wscrl(view->win, lines);
819 for (; line < end; line++) {
820 if (!view->ops->draw(view, line))
825 /* Move current line into the view. */
826 if (view->lineno < view->offset) {
827 view->lineno = view->offset;
828 view->ops->draw(view, 0);
830 } else if (view->lineno >= view->offset + view->height) {
831 if (view->lineno == view->offset + view->height) {
832 /* Clear the hidden line so it doesn't show if the view
834 wmove(view->win, view->height, 0);
835 wclrtoeol(view->win);
837 view->lineno = view->offset + view->height - 1;
838 view->ops->draw(view, view->lineno - view->offset);
841 assert(view->offset <= view->lineno && view->lineno < view->lines);
843 redrawwin(view->win);
848 /* Scroll frontend */
850 scroll_view(struct view *view, enum request request)
855 case REQ_SCROLL_PAGE_DOWN:
856 lines = view->height;
857 case REQ_SCROLL_LINE_DOWN:
858 if (view->offset + lines > view->lines)
859 lines = view->lines - view->offset;
861 if (lines == 0 || view->offset + view->height >= view->lines) {
862 report("Cannot scroll beyond the last line");
867 case REQ_SCROLL_PAGE_UP:
868 lines = view->height;
869 case REQ_SCROLL_LINE_UP:
870 if (lines > view->offset)
871 lines = view->offset;
874 report("Cannot scroll beyond the first line");
882 die("request %d not handled in switch", request);
885 do_scroll_view(view, lines);
890 move_view(struct view *view, enum request request)
895 case REQ_MOVE_FIRST_LINE:
896 steps = -view->lineno;
899 case REQ_MOVE_LAST_LINE:
900 steps = view->lines - view->lineno - 1;
903 case REQ_MOVE_PAGE_UP:
904 steps = view->height > view->lineno
905 ? -view->lineno : -view->height;
908 case REQ_MOVE_PAGE_DOWN:
909 steps = view->lineno + view->height >= view->lines
910 ? view->lines - view->lineno - 1 : view->height;
914 case REQ_MOVE_UP_ENTER:
919 case REQ_MOVE_DOWN_ENTER:
924 die("request %d not handled in switch", request);
927 if (steps <= 0 && view->lineno == 0) {
928 report("Cannot move beyond the first line");
931 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
932 report("Cannot move beyond the last line");
936 /* Move the current line */
937 view->lineno += steps;
938 assert(0 <= view->lineno && view->lineno < view->lines);
940 /* Repaint the old "current" line if we be scrolling */
941 if (ABS(steps) < view->height) {
942 int prev_lineno = view->lineno - steps - view->offset;
944 wmove(view->win, prev_lineno, 0);
945 wclrtoeol(view->win);
946 view->ops->draw(view, prev_lineno);
949 /* Check whether the view needs to be scrolled */
950 if (view->lineno < view->offset ||
951 view->lineno >= view->offset + view->height) {
952 if (steps < 0 && -steps > view->offset) {
953 steps = -view->offset;
955 } else if (steps > 0) {
956 if (view->lineno == view->lines - 1 &&
957 view->lines > view->height) {
958 steps = view->lines - view->offset - 1;
959 if (steps >= view->height)
960 steps -= view->height - 1;
964 do_scroll_view(view, steps);
968 /* Draw the current line */
969 view->ops->draw(view, view->lineno - view->offset);
971 redrawwin(view->win);
978 * Incremental updating
982 begin_update(struct view *view)
987 string_copy(view->cmd, opt_cmd);
989 /* When running random commands, the view ref could have become
990 * invalid so clear it. */
993 char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
995 if (snprintf(view->cmd, sizeof(view->cmd), format,
996 id, id, id, id, id) >= sizeof(view->cmd))
1000 /* Special case for the pager view. */
1002 view->pipe = opt_pipe;
1005 view->pipe = popen(view->cmd, "r");
1011 set_nonblocking_input(TRUE);
1016 string_copy(view->vid, id);
1021 for (i = 0; i < view->lines; i++)
1023 free(view->line[i]);
1029 view->start_time = time(NULL);
1035 end_update(struct view *view)
1039 set_nonblocking_input(FALSE);
1040 if (view->pipe == stdin)
1048 update_view(struct view *view)
1050 char buffer[BUFSIZ];
1053 /* The number of lines to read. If too low it will cause too much
1054 * redrawing (and possible flickering), if too high responsiveness
1056 unsigned long lines = view->height;
1057 int redraw_from = -1;
1062 /* Only redraw if lines are visible. */
1063 if (view->offset + view->height >= view->lines)
1064 redraw_from = view->lines - view->offset;
1066 tmp = realloc(view->line, sizeof(*view->line) * (view->lines + lines));
1072 while ((line = fgets(buffer, sizeof(buffer), view->pipe))) {
1073 int linelen = strlen(line);
1076 line[linelen - 1] = 0;
1078 if (!view->ops->read(view, line))
1088 lines = view->lines;
1089 for (digits = 0; lines; digits++)
1092 /* Keep the displayed view in sync with line number scaling. */
1093 if (digits != view->digits) {
1094 view->digits = digits;
1099 if (redraw_from >= 0) {
1100 /* If this is an incremental update, redraw the previous line
1101 * since for commits some members could have changed when
1102 * loading the main view. */
1103 if (redraw_from > 0)
1106 /* Incrementally draw avoids flickering. */
1107 redraw_view_from(view, redraw_from);
1110 /* Update the title _after_ the redraw so that if the redraw picks up a
1111 * commit reference in view->ref it'll be available here. */
1112 update_view_title(view);
1114 if (ferror(view->pipe)) {
1115 report("Failed to read: %s", strerror(errno));
1118 } else if (feof(view->pipe)) {
1119 time_t secs = time(NULL) - view->start_time;
1121 if (view == VIEW(REQ_VIEW_HELP)) {
1122 char *msg = TIG_HELP;
1124 if (view->lines == 0) {
1125 /* Slightly ugly, but abusing view->ref keeps
1126 * the error message. */
1127 string_copy(view->ref, "No help available");
1128 msg = "The tig(1) manpage is not installed";
1135 report("Loaded %d lines in %ld second%s", view->lines, secs,
1136 secs == 1 ? "" : "s");
1143 report("Allocation failure");
1151 OPEN_DEFAULT = 0, /* Use default view switching. */
1152 OPEN_SPLIT = 1, /* Split current view. */
1153 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
1154 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
1158 open_view(struct view *prev, enum request request, enum open_flags flags)
1160 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
1161 bool split = !!(flags & OPEN_SPLIT);
1162 bool reload = !!(flags & OPEN_RELOAD);
1163 struct view *view = VIEW(request);
1164 struct view *displayed;
1167 /* Cycle between displayed views and count the views. */
1168 foreach_view (displayed, nviews) {
1170 view == displayed &&
1171 !strcmp(view->vid, prev->vid)) {
1172 current_view = nviews;
1173 /* Blur out the title of the previous view. */
1174 update_view_title(prev);
1180 if (view == prev && nviews == 1 && !reload) {
1181 report("Already in %s view", view->name);
1185 if ((reload || strcmp(view->vid, view->id)) &&
1186 !begin_update(view)) {
1187 report("Failed to load %s view", view->name);
1192 display[current_view + 1] = view;
1196 /* Maximize the current view. */
1197 memset(display, 0, sizeof(display));
1199 display[current_view] = view;
1204 if (split && prev->lineno - prev->offset >= prev->height) {
1205 /* Take the title line into account. */
1206 int lines = prev->lineno - prev->offset - prev->height + 1;
1208 /* Scroll the view that was split if the current line is
1209 * outside the new limited view. */
1210 do_scroll_view(prev, lines);
1213 if (prev && view != prev) {
1214 /* "Blur" the previous view. */
1216 update_view_title(prev);
1218 /* Continue loading split views in the background. */
1224 /* Clear the old view and let the incremental updating refill
1227 report("Loading...");
1230 if (view == VIEW(REQ_VIEW_HELP))
1231 report("%s", TIG_HELP);
1236 /* If the view is backgrounded the above calls to report()
1237 * won't redraw the view title. */
1239 update_view_title(view);
1244 * User request switch noodle
1248 view_driver(struct view *view, enum request request)
1255 case REQ_MOVE_PAGE_UP:
1256 case REQ_MOVE_PAGE_DOWN:
1257 case REQ_MOVE_FIRST_LINE:
1258 case REQ_MOVE_LAST_LINE:
1259 move_view(view, request);
1262 case REQ_SCROLL_LINE_DOWN:
1263 case REQ_SCROLL_LINE_UP:
1264 case REQ_SCROLL_PAGE_DOWN:
1265 case REQ_SCROLL_PAGE_UP:
1266 scroll_view(view, request);
1273 case REQ_VIEW_PAGER:
1274 open_view(view, request, OPEN_DEFAULT);
1277 case REQ_MOVE_UP_ENTER:
1278 case REQ_MOVE_DOWN_ENTER:
1279 move_view(view, request);
1284 report("Nothing to enter");
1287 return view->ops->enter(view);
1291 int nviews = display[1] ? 2 : 1;
1292 int next_view = (current_view + 1) % nviews;
1294 if (next_view == current_view) {
1295 report("Only one view is displayed");
1299 current_view = next_view;
1300 /* Blur out the title of the previous view. */
1301 update_view_title(view);
1305 case REQ_TOGGLE_LINE_NUMBERS:
1306 opt_line_number = !opt_line_number;
1308 update_view_title(view);
1312 /* Always reload^Wrerun commands from the prompt. */
1313 open_view(view, opt_request, OPEN_RELOAD);
1316 case REQ_STOP_LOADING:
1317 foreach_view (view, i) {
1319 report("Stopped loaded the %s view", view->name),
1324 case REQ_SHOW_VERSION:
1325 report("Version: %s", VERSION);
1328 case REQ_SCREEN_RESIZE:
1331 case REQ_SCREEN_REDRAW:
1332 foreach_view (view, i) {
1334 update_view_title(view);
1338 case REQ_SCREEN_UPDATE:
1346 /* An unknown key will show most commonly used commands. */
1347 report("Unknown key, press 'h' for help");
1356 * View backend handlers
1360 pager_draw(struct view *view, unsigned int lineno)
1362 enum line_type type;
1367 if (view->offset + lineno >= view->lines)
1370 line = view->line[view->offset + lineno];
1371 type = get_line_type(line);
1373 wmove(view->win, lineno, 0);
1375 if (view->offset + lineno == view->lineno) {
1376 if (type == LINE_COMMIT) {
1377 string_copy(view->ref, line + 7);
1378 string_copy(ref_commit, view->ref);
1382 wchgat(view->win, -1, 0, type, NULL);
1385 attr = get_line_attr(type);
1386 wattrset(view->win, attr);
1388 linelen = strlen(line);
1390 if (opt_line_number || opt_tab_size < TABSIZE) {
1391 static char spaces[] = " ";
1392 int col_offset = 0, col = 0;
1394 if (opt_line_number) {
1395 unsigned long real_lineno = view->offset + lineno + 1;
1397 if (real_lineno == 1 ||
1398 (real_lineno % opt_num_interval) == 0) {
1399 wprintw(view->win, "%.*d", view->digits, real_lineno);
1402 waddnstr(view->win, spaces,
1403 MIN(view->digits, STRING_SIZE(spaces)));
1405 waddstr(view->win, ": ");
1406 col_offset = view->digits + 2;
1409 while (line && col_offset + col < view->width) {
1410 int cols_max = view->width - col_offset - col;
1414 if (*line == '\t') {
1415 assert(sizeof(spaces) > TABSIZE);
1418 cols = opt_tab_size - (col % opt_tab_size);
1421 line = strchr(line, '\t');
1422 cols = line ? line - text : strlen(text);
1425 waddnstr(view->win, text, MIN(cols, cols_max));
1430 int col = 0, pos = 0;
1432 for (; pos < linelen && col < view->width; pos++, col++)
1433 if (line[pos] == '\t')
1434 col += TABSIZE - (col % TABSIZE) - 1;
1436 waddnstr(view->win, line, pos);
1443 pager_read(struct view *view, char *line)
1445 /* Compress empty lines in the help view. */
1446 if (view == VIEW(REQ_VIEW_HELP) &&
1449 !*((char *) view->line[view->lines - 1]))
1452 view->line[view->lines] = strdup(line);
1453 if (!view->line[view->lines])
1461 pager_enter(struct view *view)
1463 char *line = view->line[view->lineno];
1465 if (get_line_type(line) == LINE_COMMIT) {
1466 if (view == VIEW(REQ_VIEW_LOG))
1467 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT | OPEN_BACKGROUNDED);
1469 open_view(view, REQ_VIEW_DIFF, OPEN_DEFAULT);
1475 static struct view_ops pager_ops = {
1483 static struct ref **get_refs(char *id);
1486 main_draw(struct view *view, unsigned int lineno)
1488 char buf[DATE_COLS + 1];
1489 struct commit *commit;
1490 enum line_type type;
1494 if (view->offset + lineno >= view->lines)
1497 commit = view->line[view->offset + lineno];
1498 if (!*commit->author)
1501 wmove(view->win, lineno, col);
1503 if (view->offset + lineno == view->lineno) {
1504 string_copy(view->ref, commit->id);
1505 string_copy(ref_commit, view->ref);
1507 wattrset(view->win, get_line_attr(type));
1508 wchgat(view->win, -1, 0, type, NULL);
1511 type = LINE_MAIN_COMMIT;
1512 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
1515 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
1516 waddnstr(view->win, buf, timelen);
1517 waddstr(view->win, " ");
1520 wmove(view->win, lineno, col);
1521 if (type != LINE_CURSOR)
1522 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
1524 if (strlen(commit->author) > 19) {
1525 waddnstr(view->win, commit->author, 18);
1526 if (type != LINE_CURSOR)
1527 wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
1528 waddch(view->win, '~');
1530 waddstr(view->win, commit->author);
1534 if (type != LINE_CURSOR)
1535 wattrset(view->win, A_NORMAL);
1537 mvwaddch(view->win, lineno, col, ACS_LTEE);
1538 wmove(view->win, lineno, col + 2);
1545 if (type == LINE_CURSOR)
1547 else if (commit->refs[i]->tag)
1548 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
1550 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
1551 waddstr(view->win, "[");
1552 waddstr(view->win, commit->refs[i]->name);
1553 waddstr(view->win, "]");
1554 if (type != LINE_CURSOR)
1555 wattrset(view->win, A_NORMAL);
1556 waddstr(view->win, " ");
1557 col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
1558 } while (commit->refs[i++]->next);
1561 if (type != LINE_CURSOR)
1562 wattrset(view->win, get_line_attr(type));
1565 int titlelen = strlen(commit->title);
1567 if (col + titlelen > view->width)
1568 titlelen = view->width - col;
1570 waddnstr(view->win, commit->title, titlelen);
1576 /* Reads git log --pretty=raw output and parses it into the commit struct. */
1578 main_read(struct view *view, char *line)
1580 enum line_type type = get_line_type(line);
1581 struct commit *commit;
1585 commit = calloc(1, sizeof(struct commit));
1589 line += STRING_SIZE("commit ");
1591 view->line[view->lines++] = commit;
1592 string_copy(commit->id, line);
1593 commit->refs = get_refs(commit->id);
1598 char *ident = line + STRING_SIZE("author ");
1599 char *end = strchr(ident, '<');
1602 for (; end > ident && isspace(end[-1]); end--) ;
1606 commit = view->line[view->lines - 1];
1607 string_copy(commit->author, ident);
1609 /* Parse epoch and timezone */
1611 char *secs = strchr(end + 1, '>');
1615 if (!secs || secs[1] != ' ')
1619 time = (time_t) atol(secs);
1620 zone = strchr(secs, ' ');
1621 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
1625 tz = ('0' - zone[1]) * 60 * 60 * 10;
1626 tz += ('0' - zone[2]) * 60 * 60;
1627 tz += ('0' - zone[3]) * 60;
1628 tz += ('0' - zone[4]) * 60;
1635 gmtime_r(&time, &commit->time);
1640 /* We should only ever end up here if there has already been a
1641 * commit line, however, be safe. */
1642 if (view->lines == 0)
1645 /* Fill in the commit title if it has not already been set. */
1646 commit = view->line[view->lines - 1];
1647 if (commit->title[0])
1650 /* Require titles to start with a non-space character at the
1651 * offset used by git log. */
1652 /* FIXME: More gracefull handling of titles; append "..." to
1653 * shortened titles, etc. */
1654 if (strncmp(line, " ", 4) ||
1658 string_copy(commit->title, line + 4);
1665 main_enter(struct view *view)
1667 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT | OPEN_BACKGROUNDED);
1671 static struct view_ops main_ops = {
1682 * Below the default key bindings are shown.
1690 struct keymap keymap[] = {
1695 * Switch to main view.
1697 * Switch to diff view.
1699 * Switch to log view.
1701 * Switch to pager view.
1705 * If on a commit line show the commit diff. Addiionally, if in
1706 * main or log view this will split the view. To open the commit
1707 * diff in full size view either use 'd' or press Return twice.
1709 * Switch to next view.
1711 { 'm', REQ_VIEW_MAIN },
1712 { 'd', REQ_VIEW_DIFF },
1713 { 'l', REQ_VIEW_LOG },
1714 { 'p', REQ_VIEW_PAGER },
1715 { 'h', REQ_VIEW_HELP },
1717 { KEY_TAB, REQ_VIEW_NEXT },
1718 { KEY_RETURN, REQ_ENTER },
1724 * Move curser one line up.
1726 * Move cursor one line down.
1728 * Move curser one line up and enter. When used in the main view
1729 * this will always show the diff of the current commit in the
1732 * Move cursor one line down and enter.
1734 * Move curser one page up.
1736 * Move cursor one page down.
1738 * Jump to first line.
1740 * Jump to last line.
1742 { KEY_UP, REQ_MOVE_UP },
1743 { KEY_DOWN, REQ_MOVE_DOWN },
1744 { 'k', REQ_MOVE_UP_ENTER },
1745 { 'j', REQ_MOVE_DOWN_ENTER },
1746 { KEY_HOME, REQ_MOVE_FIRST_LINE },
1747 { KEY_END, REQ_MOVE_LAST_LINE },
1748 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
1749 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
1755 * Scroll view one line up.
1757 * Scroll view one line down.
1759 * Scroll view one page up.
1761 * Scroll view one page down.
1763 { KEY_IC, REQ_SCROLL_LINE_UP },
1764 { KEY_DC, REQ_SCROLL_LINE_DOWN },
1765 { 'w', REQ_SCROLL_PAGE_UP },
1766 { 's', REQ_SCROLL_PAGE_DOWN },
1776 * Stop all background loading. This can be useful if you use
1777 * tig(1) in a repository with a long history without limiting
1782 * Toggle line numbers on/off.
1784 * Open prompt. This allows you to specify what git command
1790 { 'z', REQ_STOP_LOADING },
1791 { 'v', REQ_SHOW_VERSION },
1792 { 'r', REQ_SCREEN_REDRAW },
1793 { 'n', REQ_TOGGLE_LINE_NUMBERS },
1794 { ':', REQ_PROMPT },
1796 /* wgetch() with nodelay() enabled returns ERR when there's no input. */
1797 { ERR, REQ_SCREEN_UPDATE },
1799 /* Use the ncurses SIGWINCH handler. */
1800 { KEY_RESIZE, REQ_SCREEN_RESIZE },
1804 get_request(int key)
1808 for (i = 0; i < ARRAY_SIZE(keymap); i++)
1809 if (keymap[i].alias == key)
1810 return keymap[i].request;
1812 return (enum request) key;
1820 /* Whether or not the curses interface has been initialized. */
1821 bool cursed = FALSE;
1823 /* The status window is used for polling keystrokes. */
1824 static WINDOW *status_win;
1826 /* Update status and title window. */
1828 report(const char *msg, ...)
1830 static bool empty = TRUE;
1831 struct view *view = display[current_view];
1833 if (!empty || *msg) {
1836 va_start(args, msg);
1839 wmove(status_win, 0, 0);
1841 vwprintw(status_win, msg, args);
1846 wrefresh(status_win);
1851 update_view_title(view);
1853 /* Move the cursor to the right-most column of the cursor line.
1855 * XXX: This could turn out to be a bit expensive, but it ensures that
1856 * the cursor does not jump around. */
1858 wmove(view->win, view->lineno - view->offset, view->width - 1);
1859 wrefresh(view->win);
1863 /* Controls when nodelay should be in effect when polling user input. */
1865 set_nonblocking_input(bool loading)
1867 static unsigned int loading_views;
1869 if ((loading == FALSE && loading_views-- == 1) ||
1870 (loading == TRUE && loading_views++ == 0))
1871 nodelay(status_win, loading);
1879 /* Initialize the curses library */
1880 if (isatty(STDIN_FILENO)) {
1881 cursed = !!initscr();
1883 /* Leave stdin and stdout alone when acting as a pager. */
1884 FILE *io = fopen("/dev/tty", "r+");
1886 cursed = !!newterm(NULL, io, io);
1890 die("Failed to initialize curses");
1892 nonl(); /* Tell curses not to do NL->CR/NL on output */
1893 cbreak(); /* Take input chars one at a time, no wait for \n */
1894 noecho(); /* Don't echo input */
1895 leaveok(stdscr, TRUE);
1900 getmaxyx(stdscr, y, x);
1901 status_win = newwin(1, 0, y - 1, 0);
1903 die("Failed to create status window");
1905 /* Enable keyboard mapping */
1906 keypad(status_win, TRUE);
1907 wbkgdset(status_win, get_line_attr(LINE_STATUS));
1912 * Repository references
1915 static struct ref *refs;
1918 static struct ref **
1921 struct ref **id_refs = NULL;
1922 size_t id_refs_size = 0;
1925 for (i = 0; i < refs_size; i++) {
1928 if (strcmp(id, refs[i].id))
1931 tmp = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
1939 if (id_refs_size > 0)
1940 id_refs[id_refs_size - 1]->next = 1;
1941 id_refs[id_refs_size] = &refs[i];
1943 /* XXX: The properties of the commit chains ensures that we can
1944 * safely modify the shared ref. The repo references will
1945 * always be similar for the same id. */
1946 id_refs[id_refs_size]->next = 0;
1956 char *cmd_env = getenv("TIG_LS_REMOTE");
1957 char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
1958 FILE *pipe = popen(cmd, "r");
1959 char buffer[BUFSIZ];
1965 while ((line = fgets(buffer, sizeof(buffer), pipe))) {
1966 char *name = strchr(line, '\t');
1970 bool tag_commit = FALSE;
1976 namelen = strlen(name) - 1;
1978 /* Commits referenced by tags has "^{}" appended. */
1979 if (name[namelen - 1] == '}') {
1980 while (namelen > 0 && name[namelen] != '^')
1987 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
1990 name += STRING_SIZE("refs/tags/");
1993 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
1994 name += STRING_SIZE("refs/heads/");
1996 } else if (!strcmp(name, "HEAD")) {
2000 refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
2004 ref = &refs[refs_size++];
2006 ref->name = strdup(name);
2010 string_copy(ref->id, line);
2028 /* XXX: Restore tty modes and let the OS cleanup the rest! */
2034 static void die(const char *err, ...)
2040 va_start(args, err);
2041 fputs("tig: ", stderr);
2042 vfprintf(stderr, err, args);
2043 fputs("\n", stderr);
2050 main(int argc, char *argv[])
2053 enum request request;
2056 signal(SIGINT, quit);
2058 if (!parse_options(argc, argv))
2061 if (load_refs() == ERR)
2062 die("Failed to load refs.");
2064 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
2065 view->cmd_env = getenv(view->cmd_env);
2067 request = opt_request;
2071 while (view_driver(display[current_view], request)) {
2075 foreach_view (view, i)
2078 /* Refresh, accept single keystroke of input */
2079 key = wgetch(status_win);
2080 request = get_request(key);
2082 /* Some low-level request handling. This keeps access to
2083 * status_win restricted. */
2087 /* Temporarily switch to line-oriented and echoed
2092 if (wgetnstr(status_win, opt_cmd + 4, sizeof(opt_cmd) - 4) == OK) {
2093 memcpy(opt_cmd, "git ", 4);
2094 opt_request = REQ_VIEW_PAGER;
2103 case REQ_SCREEN_RESIZE:
2107 getmaxyx(stdscr, height, width);
2109 /* Resize the status view and let the view driver take
2110 * care of resizing the displayed views. */
2111 wresize(status_win, 1, width);
2112 mvwin(status_win, height - 1, 0);
2113 wrefresh(status_win);
2127 * Specifying revisions
2128 * --------------------
2129 * This section describes various ways to specify what revisions to
2130 * display or otherwise limit the view to.
2132 * Limit by date or number
2133 * ~~~~~~~~~~~~~~~~~~~~~~~
2134 * To speed up interaction with git, you can limit the amount of commits
2135 * to show both for the log and main view. Either limit by date using
2136 * e.g. `--since=1.month` or limit by the number of commits using `-n400`.
2138 * NOTE: You can tune the interaction with git by making use of the options
2139 * explained in this section.
2141 * NOTE: tig(1) does not itself parse the revision options
2142 * described in this section.
2146 * Alternatively, commits can be limited to a specific range, such as
2147 * "all commits between 'tag-1.0' and 'tag-2.0'". For example:
2149 * $ tig log tag-1.0..tag-2.0
2151 * This way of commit limiting makes it trivial to only browse the commits
2152 * which haven't been pushed to a remote branch. Assuming 'origin' is your
2153 * upstream remote branch, using:
2155 * $ tig log origin..HEAD
2157 * will list what will be pushed to the remote branch. Optionally, the ending
2158 * 'HEAD' can be left out since it is implied.
2160 * Limiting by reachability
2161 * ~~~~~~~~~~~~~~~~~~~~~~~~
2162 * Git interprets the range specifier "tag-1.0..tag-2.0" as
2163 * "all commits reachable from 'tag-2.0' but not from 'tag-1.0'".
2164 * If you prefer to specify which commit to preview in this way use the
2167 * $ tig log tag-2.0 ^tag-1.0
2169 * You can think of '^' as a negator. Using this alternate syntax, it is
2170 * possible to furthur prune commits by specifying multiple negators.
2174 * Known bugs and problems:
2176 * - If the screen width is very small the main view can draw
2177 * outside the current view causing bad wrapping. Same goes
2178 * for title and status windows.
2182 * Features that should be explored.
2190 * Copyright (c) Jonas Fonseca <fonseca@diku.dk>, 2006
2192 * This program is free software; you can redistribute it and/or modify
2193 * it under the terms of the GNU General Public License as published by
2194 * the Free Software Foundation; either version 2 of the License, or
2195 * (at your option) any later version.
2200 * link:http://www.kernel.org/pub/software/scm/git/docs/[git(7)],
2201 * link:http://www.kernel.org/pub/software/scm/cogito/docs/[cogito(7)]
2202 * gitk(1): git repository browser written using tcl/tk,
2203 * gitview(1): git repository browser written using python/gtk.