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make lineno_width() from blame reusable for others

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builtin/blame.c has a helper function to compute how many columns
we need to show a line-number, whose implementation is reusable as
a more generic helper function to count the number of columns
necessary to show any cardinal number.

Rename it to decimal_width(), move it to pager.c and export it for
use by future callers.

Signed-off-by: Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Zbigniew Jędrzejewski-Szmek
2012-02-12 15:16:20 +01:00
committed by Junio C Hamano
parent 58d4203aa6
commit ec7ff5ba27
3 changed files with 16 additions and 15 deletions
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cache.h
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@ -1176,6 +1176,7 @@ extern void setup_pager(void);
extern const char *pager_program;
extern int pager_in_use(void);
extern int pager_use_color;
extern int decimal_width(int);
extern const char *editor_program;
extern const char *askpass_program;