[PATCH v3 0/7] Detailed test coverage reports for Git

Here's v3 of the patch. It's almost entirely changes from Jonathan
Nieder mentioned in the review for v2 (minus the bugs). Thanks
Jonathan!

Here's the stat from v2:
   
    .gitignore |   12 ++++++------
    Makefile   |   15 ++++++++++-----
    t/README   |    8 ++++----
    3 files changed, 20 insertions(+), 15 deletions(-)
   
And the diff:
    
    diff --git a/.gitignore b/.gitignore
    index baed247..0a30a7e 100644
    --- a/.gitignore
    +++ b/.gitignore
    @@ -183,0 +184,6 @@
    +*.gcda
    +*.gcno
    +*.gcov
    +/coverage-untested-functions
    +/cover_db/
    +/cover_db_html/
    @@ -207,6 +212,0 @@
    -*.gcda
    -*.gcno
    -*.gcov
    -/coverage-untested-functions
    -/cover_db
    -/cover_db_html
    diff --git a/Makefile b/Makefile
    index b6975aa..fdfa4fe 100644
    --- a/Makefile
    +++ b/Makefile
    @@ -1487,0 +1488 @@ ifndef V
    +	QUIET_GCOV     = @echo '   ' GCOV $@;
    @@ -2287,0 +2289,3 @@ coverage-clean:
    +	$(RM) coverage-untested-functions
    +	$(RM) -r cover_db/
    +	$(RM) -r cover_db_html/
    @@ -2290,0 +2295 @@ COVERAGE_LDFLAGS = $(CFLAGS)  -O0 -lgcov
    +GCOVFLAGS = --preserve-paths --branch-probabilities --all-blocks
    @@ -2298,2 +2303,2 @@ coverage-report:
    -	for dir in $(object_dirs); do \
    -		gcov --preserve-paths --branch-probabilities --all-blocks --object-directory=$$dir $$dir*.c; \
    +	$(QUIET_GCOV)for dir in $(object_dirs); do \
    +		gcov $(GCOVFLAGS) --object-directory=$$dir $$dir*.c || exit; \
    @@ -2305 +2310 @@ coverage-untested-functions: coverage-report
    -		| tee coverage-untested-functions
    +		> coverage-untested-functions
    @@ -2307 +2312 @@ coverage-untested-functions: coverage-report
    -coverage-report-cover-db: coverage-report
    +cover_db: coverage-report
    @@ -2310 +2315 @@ coverage-report-cover-db: coverage-report
    -coverage-report-cover-db-html: coverage-report-cover-db
    +cover_db_html: cover_db
    diff --git a/t/README b/t/README
    index 400e2da..4fe8d50 100644
    --- a/t/README
    +++ b/t/README
    @@ -270 +270 @@ Do:
    -    
    +
    @@ -534 +534 @@ directory):
    -    
    +
    @@ -554 +554 @@ Devel::Cover module. To install it do:
    -   
    +
    @@ -557 +557 @@ Then, at the top-level:
    -    make coverage-report-cover-db-html
    +    make cover_db_html
    
Ævar Arnfjörð Bjarmason (7):
  gitignore: Ignore files generated by "make coverage"
  Makefile: Include subdirectories in "make cover" reports
  Makefile: Split out the untested functions target
  Makefile: Add coverage-report-cover-db target
  Makefile: Add coverage-report-cover-db-html target
  t/README: A new section about test coverage
  t/README: Add a note about the dangers of coverage chasing

 .gitignore |    6 ++++++
 Makefile   |   24 +++++++++++++++++++++---
 t/README   |   51 +++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 78 insertions(+), 3 deletions(-)