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pager: find out the terminal width before spawning the pager

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term_columns() checks for terminal width via ioctl(2) on the standard
output, but we spawn the pager too early for this check to be useful.

The effect of this buglet can be observed by opening a wide terminal and
running "git -p help --all", which still shows 80-column output, while
"git help --all" uses the full terminal width. Run the check before we
spawn the pager to fix this.

While at it, move term_columns() to pager.c and export it from cache.h so
that callers other than the help subsystem can use it.

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 15:12:32 +01:00
committed by Junio C Hamano
parent d0482e88a7
commit ad6c3739a3
3 changed files with 38 additions and 22 deletions
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cache.h
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@ -1172,6 +1172,7 @@ extern void setup_pager(void);
extern const char *pager_program;
extern int pager_in_use(void);
extern int pager_use_color;
extern int term_columns(void);
extern const char *editor_program;
extern const char *askpass_program;