To save the user a lookup of the last line number, introduce $ as a
shorthand for the last line. This is mostly useful to spell "until
the end of the file" as '-L<begin>,$'.
Signed-off-by: Thomas Rast <trast@xxxxxxxxxxxxxxx>
---
Documentation/line-range-format.txt | 6 ++++++
line.c | 8 ++++++++
2 files changed, 14 insertions(+)
diff --git a/Documentation/line-range-format.txt b/Documentation/line-range-format.txt
index 265bc23..9ce0688 100644
--- a/Documentation/line-range-format.txt
+++ b/Documentation/line-range-format.txt
@@ -16,3 +16,9 @@ starting at the line given by <start>.
This is only valid for <end> and will specify a number
of lines before or after the line given by <start>.
+
+
+- `$`
++
+A literal dollar sign can be used as a shorthand for the last line in
+the file.
++
diff --git a/line.c b/line.c
index afd2e3b..a7f33ed 100644
--- a/line.c
+++ b/line.c
@@ -15,6 +15,14 @@ const char *parse_loc(const char *spec, nth_line_fn_t nth_line,
regmatch_t match[1];
/*
+ * $ is a synonym for "the end of the file".
+ */
+ if (spec[0] == '$') {
+ *ret = lines;
+ return spec + 1;
+ }
+
+ /*
* Allow "-L <something>,+20" to mean starting at <something>
* for 20 lines, or "-L <something>,-5" for 5 lines ending at
* <something>.
--
1.7.11.rc1.243.gbf4713c
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