Will also affect annotate

Signed-off-by: Edmundo Carmona Antoranz <eantor...@gmail.com>
---
 Documentation/blame-options.txt |  7 +++++++
 Documentation/git-blame.txt     |  9 ++++++++-
 builtin/blame.c                 | 39 ++++++++++++++++++++++++++++++++++++---
 3 files changed, 51 insertions(+), 4 deletions(-)

diff --git a/Documentation/blame-options.txt b/Documentation/blame-options.txt
index 760eab7..43f4f08 100644
--- a/Documentation/blame-options.txt
+++ b/Documentation/blame-options.txt
@@ -69,6 +69,13 @@ include::line-range-format.txt[]
        iso format is used. For supported values, see the discussion
        of the --date option at linkgit:git-log[1].
 
+--[no-]progress::
+       Progress status is reported on the standard error stream
+       by default when it is attached to a terminal. This flag
+       enables progress reporting even if not attached to a
+       terminal.
+
+
 -M|<num>|::
        Detect moved or copied lines within a file. When a commit
        moves or copies a block of lines (e.g. the original file
diff --git a/Documentation/git-blame.txt b/Documentation/git-blame.txt
index e6e947c..2e63397 100644
--- a/Documentation/git-blame.txt
+++ b/Documentation/git-blame.txt
@@ -10,7 +10,8 @@ SYNOPSIS
 [verse]
 'git blame' [-c] [-b] [-l] [--root] [-t] [-f] [-n] [-s] [-e] [-p] [-w] 
[--incremental]
            [-L <range>] [-S <revs-file>] [-M] [-C] [-C] [-C] [--since=<date>]
-           [--abbrev=<n>] [<rev> | --contents <file> | --reverse <rev>] [--] 
<file>
+           [--[no-]progress] [--abbrev=<n>] [<rev> | --contents <file> | 
--reverse <rev>]
+           [--] <file>
 
 DESCRIPTION
 -----------
@@ -88,6 +89,12 @@ include::blame-options.txt[]
        abbreviated object name, use <n>+1 digits. Note that 1 column
        is used for a caret to mark the boundary commit.
 
+--[no-]progress::
+       Progress status is reported on the standard error stream
+       by default when it is attached to a terminal. This flag
+       enables progress reporting even if not attached to a
+       terminal.
+
 
 THE PORCELAIN FORMAT
 --------------------
diff --git a/builtin/blame.c b/builtin/blame.c
index 83612f5..31477d8 100644
--- a/builtin/blame.c
+++ b/builtin/blame.c
@@ -28,6 +28,7 @@
 #include "line-range.h"
 #include "line-log.h"
 #include "dir.h"
+#include "progress.h"
 
 static char blame_usage[] = N_("git blame [<options>] [<rev-opts>] [<rev>] 
[--] <file>");
 
@@ -50,6 +51,7 @@ static int incremental;
 static int xdl_opts;
 static int abbrev = -1;
 static int no_whole_file_rename;
+static int show_progress;
 
 static struct date_mode blame_date_mode = { DATE_ISO8601 };
 static size_t blame_date_width;
@@ -1760,14 +1762,28 @@ static void found_guilty_entry(struct blame_entry *ent)
        }
 }
 
+static int count_blamed_lines(struct scoreboard *sb)
+{
+       int counter = 0;
+       for (struct blame_entry * entry = sb->ent; entry; entry = entry->next)
+               counter += entry->num_lines;
+       return counter;
+}
+
 /*
  * The main loop -- while we have blobs with lines whose true origin
  * is still unknown, pick one blob, and allow its lines to pass blames
  * to its parents. */
-static void assign_blame(struct scoreboard *sb, int opt)
+static void assign_blame(struct scoreboard *sb, int opt, int show_progress)
 {
        struct rev_info *revs = sb->revs;
        struct commit *commit = prio_queue_get(&sb->commits);
+       struct progress * progress = NULL;
+       int blamed_lines = -1;
+
+       if (show_progress) {
+               progress = start_progress(_("Blaming lines"), sb->num_lines);
+       }
 
        while (commit) {
                struct blame_entry *ent;
@@ -1822,9 +1838,21 @@ static void assign_blame(struct scoreboard *sb, int opt)
                }
                origin_decref(suspect);
 
+               if (progress) {
+                       int current_blamed_lines = count_blamed_lines(sb);
+                       if (current_blamed_lines > blamed_lines) {
+                               blamed_lines = current_blamed_lines;
+                               display_progress(progress, blamed_lines);
+                       }
+               }
+
                if (DEBUG) /* sanity */
                        sanity_check_refcnt(sb);
        }
+
+       if (progress) {
+               stop_progress(&progress);
+       }
 }
 
 static const char *format_time(unsigned long time, const char *tz_str,
@@ -2520,6 +2548,7 @@ int cmd_blame(int argc, const char **argv, const char 
*prefix)
                OPT_BOOL('b', NULL, &blank_boundary, N_("Show blank SHA-1 for 
boundary commits (Default: off)")),
                OPT_BOOL(0, "root", &show_root, N_("Do not treat root commits 
as boundaries (Default: off)")),
                OPT_BOOL(0, "show-stats", &show_stats, N_("Show work cost 
statistics")),
+               OPT_BOOL(0, "progress", &show_progress, N_("Force progress 
reporting")),
                OPT_BIT(0, "score-debug", &output_option, N_("Show output score 
for blame entries"), OUTPUT_SHOW_SCORE),
                OPT_BIT('f', "show-name", &output_option, N_("Show original 
filename (Default: auto)"), OUTPUT_SHOW_NAME),
                OPT_BIT('n', "show-number", &output_option, N_("Show original 
linenumber (Default: off)"), OUTPUT_SHOW_NUMBER),
@@ -2555,6 +2584,7 @@ int cmd_blame(int argc, const char **argv, const char 
*prefix)
 
        save_commit_buffer = 0;
        dashdash_pos = 0;
+       show_progress = -1;
 
        parse_options_start(&ctx, argc, argv, prefix, options,
                            PARSE_OPT_KEEP_DASHDASH | PARSE_OPT_KEEP_ARGV0);
@@ -2578,6 +2608,9 @@ parse_done:
        no_whole_file_rename = !DIFF_OPT_TST(&revs.diffopt, FOLLOW_RENAMES);
        DIFF_OPT_CLR(&revs.diffopt, FOLLOW_RENAMES);
        argc = parse_options_end(&ctx);
+       if (show_progress < 0) {
+               show_progress = isatty(2);
+       }
 
        if (0 < abbrev)
                /* one more abbrev length is needed for the boundary commit */
@@ -2830,11 +2863,11 @@ parse_done:
 
        read_mailmap(&mailmap, NULL);
 
+       assign_blame(&sb, opt, show_progress);
+
        if (!incremental)
                setup_pager();
 
-       assign_blame(&sb, opt);
-
        free(final_commit_name);
 
        if (incremental)
-- 
2.6.2

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