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[PATCH] Correct singular form in diff summary line for human interaction

From
Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Date
Jan 31, 2012, 14:24 UTC
Message-ID
<1328019840-6168-1-git-send-email-pclouds@gmail.com>

"git diff --stat" and "git apply --stat" now learn to print the line "%d files changed, %d insertions(+), %d deletions(-)" in singular form whenever applicable.

This change uncondtionally would upset scripts because scripts are not nice. They simply hate changes. They can be very hostile when that happens. So only adjust the line for human consumption.

Convenient function interactive_use() is added for this purpose. The command thinks it's in human hands when:

 - GIT_SCRIPTING environment variable is not set
 - pager is on or
 - both stdout and stderr point to tty device
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
 The third attempt in the last couple months to remove three "s" in
 one line. I did not upset the test suite with this and hopefully
 won't upset any scripts around. Good start?
 builtin/apply.c |    3 ++-
 cache.h         |    1 +
 diff.c          |   33 ++++++++++++++++++++++++++++-----
 diff.h          |    3 +++
 pager.c         |    7 +++++++
 5 files changed, 41 insertions(+), 6 deletions(-)
diff --git a/builtin/apply.c b/builtin/apply.c
index c24dc54..389898f 100644
--- a/builtin/apply.c
+++ b/builtin/apply.c
@@ -14,6 +14,7 @@
 #include "builtin.h"
 #include "string-list.h"
 #include "dir.h"
+#include "diff.h"
 #include "parse-options.h"
 
 /*
@@ -3241,7 +3242,7 @@ static void stat_patch_list(struct patch *patch)
 		show_stats(patch);
 	}
 
-	printf(" %d files changed, %d insertions(+), %d deletions(-)\n", files, adds, dels);
+	print_stat_summary(stdout, files, adds, dels);
 }
 
 static void numstat_patch_list(struct patch *patch)
diff --git a/cache.h b/cache.h
index 10afd71..7e0bb2b 100644
--- a/cache.h
+++ b/cache.h
@@ -1175,6 +1175,7 @@ extern void setup_pager(void);
 extern const char *pager_program;
 extern int pager_in_use(void);
 extern int pager_use_color;
+extern int interactive_use(void);
 
 extern const char *editor_program;
 extern const char *askpass_program;
diff --git a/diff.c b/diff.c
index 7e15426..2d63e9c 100644
--- a/diff.c
+++ b/diff.c
@@ -1322,6 +1322,32 @@ static void fill_print_name(struct diffstat_file *file)
 	file->print_name = pname;
 }
 
+int print_stat_summary(FILE *fp, int files, int insertions, int deletions)
+{
+	struct strbuf sb = STRBUF_INIT;
+	int ret;
+
+	if (!interactive_use())
+		return fprintf(fp, " %d files changed, %d insertions(+), %d deletions(-)\n",
+			       files, insertions, deletions);
+
+	strbuf_addf(&sb,
+		    ngettext(" %d file changed,", " %d files changed,",
+			     files),
+		    files);
+	strbuf_addf(&sb,
+		    ngettext(" %d insertion(+),", " %d insertions(+),",
+			     insertions),
+		    insertions);
+	strbuf_addf(&sb,
+		    ngettext(" %d deletion(-)\n", " %d deletions(-)\n",
+			     deletions),
+		    deletions);
+	ret = fputs(sb.buf, fp);
+	strbuf_release(&sb);
+	return ret;
+}
+
 static void show_stats(struct diffstat_t *data, struct diff_options *options)
 {
 	int i, len, add, del, adds = 0, dels = 0;
@@ -1475,9 +1501,7 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
 		extra_shown = 1;
 	}
 	fprintf(options->file, "%s", line_prefix);
-	fprintf(options->file,
-	       " %d files changed, %d insertions(+), %d deletions(-)\n",
-	       total_files, adds, dels);
+	print_stat_summary(options->file, total_files, adds, dels);
 }
 
 static void show_shortstats(struct diffstat_t *data, struct diff_options *options)
@@ -1507,8 +1531,7 @@ static void show_shortstats(struct diffstat_t *data, struct diff_options *option
 				options->output_prefix_data);
 		fprintf(options->file, "%s", msg->buf);
 	}
-	fprintf(options->file, " %d files changed, %d insertions(+), %d deletions(-)\n",
-	       total_files, adds, dels);
+	print_stat_summary(options->file, total_files, adds, dels);
 }
 
 static void show_numstat(struct diffstat_t *data, struct diff_options *options)
diff --git a/diff.h b/diff.h
index ae71f4c..7af5f1e 100644
--- a/diff.h
+++ b/diff.h
@@ -324,4 +324,7 @@ extern struct userdiff_driver *get_textconv(struct diff_filespec *one);
 
 extern int parse_rename_score(const char **cp_p);
 
+extern int print_stat_summary(FILE *fp, int files,
+			      int insertions, int deletions);
+
 #endif /* DIFF_H */
diff --git a/pager.c b/pager.c
index 975955b..9a3d3d8 100644
--- a/pager.c
+++ b/pager.c
@@ -110,3 +110,10 @@ int pager_in_use(void)
 	env = getenv("GIT_PAGER_IN_USE");
 	return env ? git_config_bool("GIT_PAGER_IN_USE", env) : 0;
 }
+
+int interactive_use(void)
+{
+	const char *env;
+	env = getenv("GIT_SCRIPTING");
+	return !env && (pager_in_use() || (isatty(1) && isatty(2)));
+}
-- 
1.7.8.36.g69ee2
Next: Jonathan Nieder
Message 1 of 32 in “Correct singular form in diff summary line for human interaction”
  1. Correct singular form in diff summary line for human interactionNguyễn Thái Ngọc Duy, Jan 31, 2012
  2. Jonathan NiederJan 31, 2012
  3. Junio C HamanoJan 31, 2012
  4. Nguyen Thai Ngoc DuyFeb 1, 2012
  5. Thomas DickeyFeb 1, 2012
  6. Thomas DickeyFeb 1, 2012
  7. Nguyen Thai Ngoc DuyFeb 1, 2012
  8. Junio C HamanoFeb 1, 2012
  9. Thomas DickeyFeb 1, 2012
  10. Use correct grammar in diffstat summary lineNguyễn Thái Ngọc Duy, Feb 1, 2012
  11. Junio C HamanoFeb 1, 2012
  12. Nguyen Thai Ngoc DuyFeb 2, 2012
  13. Junio C HamanoFeb 2, 2012
  14. Nguyen Thai Ngoc DuyFeb 3, 2012
  15. Junio C HamanoFeb 3, 2012
  16. Jeff KingFeb 3, 2012
  17. Jonathan NiederFeb 1, 2012
  18. i18n: do not define gettext/ngettext in NO_GETTEXT caseJonathan Nieder, Feb 2, 2012
  19. Jonathan NiederFeb 2, 2012
  20. Jonathan NiederFeb 2, 2012
  21. 0/7 tests: diffstat summary line varies by locale (Re: [PATCH v2] Use correct grammar in diffstat summary line)Jonathan Nieder, Mar 13, 2012
  22. 1/7 test: use test_i18ncmp when checking --stat outputJonathan Nieder, Mar 13, 2012
  23. Junio C HamanoMar 13, 2012
  24. Junio C HamanoMar 13, 2012
  25. Jonathan NiederMar 13, 2012
  26. Jonathan NiederMar 13, 2012
  27. 2/7 test: use numstat instead of diffstat in funny-names testJonathan Nieder, Mar 13, 2012
  28. 3/7 test: modernize funny-names test styleJonathan Nieder, Mar 13, 2012
  29. 4/7 test: test cherry-pick functionality and output separatelyJonathan Nieder, Mar 13, 2012
  30. 5/7 test: use --numstat instead of --stat in "git stash show" testsJonathan Nieder, Mar 13, 2012
  31. 6/7 test: use numstat instead of diffstat in binary-diff testJonathan Nieder, Mar 13, 2012
  32. 7/7 diffstat summary line varies by locale: miscellanyJonathan Nieder, Mar 13, 2012

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