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https://github.com/git/git
synced 2024-08-27 11:39:22 +00:00
64778d24a9
Scripted commands that want to use git’s configured pager know better than ‘git var’ does whether stdout is going to be a tty at the appropriate time. Checking isatty(1) as git_pager() does now won’t cut it, since the output of git var itself is almost never a terminal. The symptom is that when used by humans, ‘git var GIT_PAGER’ behaves as it should, but when used by scripts, it always returns ‘cat’! So avoid tricks with isatty() and just always print the configured pager. This does not fix the callers to check isatty(1) themselves yet. Nevertheless, this patch alone is enough to fix 'am --interactive'. Thanks to Sebastian Celis for the report and Jeff King for the analysis. Reported-by: Sebastian Celis <sebastian@sebastiancelis.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
100 lines
1.8 KiB
C
100 lines
1.8 KiB
C
/*
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* GIT - The information manager from hell
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*
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* Copyright (C) Eric Biederman, 2005
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*/
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#include "cache.h"
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#include "exec_cmd.h"
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static const char var_usage[] = "git var (-l | <variable>)";
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static const char *editor(int flag)
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{
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const char *pgm = git_editor();
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if (!pgm && flag & IDENT_ERROR_ON_NO_NAME)
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die("Terminal is dumb, but EDITOR unset");
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return pgm;
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}
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static const char *pager(int flag)
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{
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const char *pgm = git_pager(1);
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if (!pgm)
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pgm = "cat";
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return pgm;
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}
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struct git_var {
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const char *name;
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const char *(*read)(int);
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};
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static struct git_var git_vars[] = {
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{ "GIT_COMMITTER_IDENT", git_committer_info },
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{ "GIT_AUTHOR_IDENT", git_author_info },
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{ "GIT_EDITOR", editor },
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{ "GIT_PAGER", pager },
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{ "", NULL },
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};
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static void list_vars(void)
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{
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struct git_var *ptr;
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const char *val;
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for (ptr = git_vars; ptr->read; ptr++)
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if ((val = ptr->read(0)))
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printf("%s=%s\n", ptr->name, val);
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}
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static const char *read_var(const char *var)
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{
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struct git_var *ptr;
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const char *val;
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val = NULL;
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for (ptr = git_vars; ptr->read; ptr++) {
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if (strcmp(var, ptr->name) == 0) {
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val = ptr->read(IDENT_ERROR_ON_NO_NAME);
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break;
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}
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}
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return val;
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}
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static int show_config(const char *var, const char *value, void *cb)
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{
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if (value)
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printf("%s=%s\n", var, value);
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else
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printf("%s\n", var);
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return git_default_config(var, value, cb);
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}
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int cmd_var(int argc, const char **argv, const char *prefix)
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{
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const char *val;
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int nongit;
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if (argc != 2) {
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usage(var_usage);
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}
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setup_git_directory_gently(&nongit);
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val = NULL;
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if (strcmp(argv[1], "-l") == 0) {
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git_config(show_config, NULL);
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list_vars();
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return 0;
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}
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git_config(git_default_config, NULL);
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val = read_var(argv[1]);
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if (!val)
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usage(var_usage);
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printf("%s\n", val);
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return 0;
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}
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