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[PATCH v9 14/20] ref-filter: Do not abruptly die when using the 'lstrip=<N>' option

From
Karthik Nayak <karthik.188@gmail.com>
Date
Dec 27, 2016, 16:23 UTC
Message-ID
<20161227162357.28212-15-Karthik.188@gmail.com>
In-Reply-To
<20161227162357.28212-1-Karthik.188@gmail.com>

Currently when we use the 'lstrip=<N>' option, if 'N' is greater than the number of components available in the refname, we abruptly end program execution by calling die().

This behavior is undesired since a single refname with few components could end program execution. To avoid this, return an empty string whenever the value 'N' is greater than the number of components available, instead of calling die().

Signed-off-by: Karthik Nayak <Karthik.188@gmail.com>
---
 Documentation/git-for-each-ref.txt | 3 +--
 ref-filter.c                       | 3 +--
 t/t6300-for-each-ref.sh            | 4 ----
 3 files changed, 2 insertions(+), 8 deletions(-)
diff --git a/Documentation/git-for-each-ref.txt b/Documentation/git-for-each-ref.txt
index 46b4583..82c202a 100644
--- a/Documentation/git-for-each-ref.txt
+++ b/Documentation/git-for-each-ref.txt
@@ -98,8 +98,7 @@ refname::
 	abbreviation mode. If `lstrip=<N>` is appended, strips `<N>`
 	slash-separated path components from the front of the refname
 	(e.g., `%(refname:lstrip=2)` turns `refs/tags/foo` into `foo`.
-	`<N>` must be a positive integer.  If a displayed ref has fewer
-	components than `<N>`, the command aborts with an error.
+	`<N>` must be a positive integer.
 
 objecttype::
 	The type of the object (`blob`, `tree`, `commit`, `tag`).
diff --git a/ref-filter.c b/ref-filter.c
index e0015c6..76553eb 100644
--- a/ref-filter.c
+++ b/ref-filter.c
@@ -1099,8 +1099,7 @@ static const char *lstrip_ref_components(const char *refname, unsigned int len)
 	while (remaining) {
 		switch (*start++) {
 		case '\0':
-			die(_("ref '%s' does not have %ud components to :lstrip"),
-			    refname, len);
+			return "";
 		case '/':
 			remaining--;
 			break;
diff --git a/t/t6300-for-each-ref.sh b/t/t6300-for-each-ref.sh
index 5eb013c..d3d1a97 100755
--- a/t/t6300-for-each-ref.sh
+++ b/t/t6300-for-each-ref.sh
@@ -147,10 +147,6 @@ test_expect_success 'arguments to :lstrip must be positive integers' '
 	test_must_fail git for-each-ref --format="%(refname:lstrip=foo)"
 '
 
-test_expect_success 'stripping refnames too far gives an error' '
-	test_must_fail git for-each-ref --format="%(refname:lstrip=3)"
-'
-
 test_expect_success 'Check format specifiers are ignored in naming date atoms' '
 	git for-each-ref --format="%(authordate)" refs/heads &&
 	git for-each-ref --format="%(authordate:default) %(authordate)" refs/heads &&
-- 
2.10.2
Previous: Karthik NayakNext: Karthik Nayak
Message 22 of 34 in “port branch.c to use ref-filter's printing options”
  1. 00/20 port branch.c to use ref-filter's printing optionsKarthik Nayak, Dec 27, 2016
  2. 01/20 ref-filter: implement %(if), %(then), and %(else) atomsKarthik Nayak, Dec 27, 2016
  3. Junio C HamanoDec 27, 2016
  4. Karthik NayakDec 28, 2016
  5. 03/20 ref-filter: implement %(if:equals=<string>) and %(if:notequals=<string>)Karthik Nayak, Dec 27, 2016
  6. Junio C HamanoDec 27, 2016
  7. Karthik NayakDec 28, 2016
  8. 02/20 ref-filter: include reference to 'used_atom' within 'atom_value'Karthik Nayak, Dec 27, 2016
  9. Junio C HamanoDec 27, 2016
  10. Karthik NayakDec 28, 2016
  11. 05/20 ref-filter: move get_head_description() from branch.cKarthik Nayak, Dec 27, 2016
  12. 04/20 ref-filter: modify "%(objectname:short)" to take lengthKarthik Nayak, Dec 27, 2016
  13. 06/20 ref-filter: introduce format_ref_array_item()Karthik Nayak, Dec 27, 2016
  14. 07/20 ref-filter: make %(upstream:track) prints "[gone]" for invalid upstreamsKarthik Nayak, Dec 27, 2016
  15. 08/20 ref-filter: add support for %(upstream:track,nobracket)Karthik Nayak, Dec 27, 2016
  16. 10/20 ref-filter: introduce refname_atom_parser_internal()Karthik Nayak, Dec 27, 2016
  17. 09/20 ref-filter: make "%(symref)" atom work with the ':short' modifierKarthik Nayak, Dec 27, 2016
  18. 12/20 ref-filter: make remote_ref_atom_parser() use refname_atom_parser_internal()Karthik Nayak, Dec 27, 2016
  19. 11/20 ref-filter: introduce refname_atom_parser()Karthik Nayak, Dec 27, 2016
  20. Junio C HamanoDec 27, 2016
  21. Karthik NayakDec 28, 2016
  22. 14/20 ref-filter: Do not abruptly die when using the 'lstrip=<N>' optionKarthik Nayak, Dec 27, 2016
  23. 13/20 ref-filter: rename the 'strip' option to 'lstrip'Karthik Nayak, Dec 27, 2016
  24. 15/20 ref-filter: modify the 'lstrip=<N>' option to work with negative '<N>'Karthik Nayak, Dec 27, 2016
  25. Junio C HamanoDec 27, 2016
  26. Jacob KellerDec 28, 2016
  27. Karthik NayakDec 28, 2016
  28. 16/20 ref-filter: add an 'rstrip=<N>' option to atoms which deal with refnamesKarthik Nayak, Dec 27, 2016
  29. 17/20 ref-filter: allow porcelain to translate messages in the outputKarthik Nayak, Dec 27, 2016
  30. 18/20 branch, tag: use porcelain outputKarthik Nayak, Dec 27, 2016
  31. 19/20 branch: use ref-filter printing APIsKarthik Nayak, Dec 27, 2016
  32. Junio C HamanoDec 27, 2016
  33. Karthik NayakDec 28, 2016
  34. 20/20 branch: implement '--format' optionKarthik Nayak, Dec 27, 2016

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