Fix 'git log' early pager startup error case

We start the pager too early for several git commands, which results in
the errors sometimes going to the pager rather than show up as errors.

This is often hidden by the fact that we pass in '-X' to less by default,
which causes 'less' to exit for small output, but if you do

  export LESS=-S

you can then clearly see the problem by doing

  git log --prretty

which shows the error message ("fatal: unrecognized argument: --prretty")
being sent to the pager.

This happens for pretty much all git commands that use USE_PAGER, and then
check arguments separately. But "git diff" does it too early too (even
though it does an explicit setup_pager() call)

This only fixes it for the trivial "git log" family case.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/log.c b/builtin/log.c
index 08b872263cd646ec9d7dc8ad91273c71b1af2b69..eaa1ee0fa71a344af747dec038c6a5907c8273a5 100644 (file)
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -125,6 +125,7 @@ static void cmd_log_init(int argc, const char **argv, const char *prefix,
                rev->show_decorations = 1;
                load_ref_decorations(decoration_style);
        }
+       setup_pager();
 }
 
 /*
@@ -491,12 +492,6 @@ int cmd_log_reflog(int argc, const char **argv, const char *prefix)
        rev.use_terminator = 1;
        rev.always_show_header = 1;
 
-       /*
-        * We get called through "git reflog", so unlike the other log
-        * routines, we need to set up our pager manually..
-        */
-       setup_pager();
-
        return cmd_log_walk(&rev);
 }
 

diff --git a/git.c b/git.c
index f37028b3b722e6203ae8dac1ccf40a94421597d2..b83c1d17ab803ae0fa1d6c0dece43f2c0334f23d 100644 (file)
--- a/git.c
+++ b/git.c
@@ -336,7 +336,7 @@ static void handle_internal_command(int argc, const char **argv)
                { "index-pack", cmd_index_pack },
                { "init", cmd_init_db },
                { "init-db", cmd_init_db },
-               { "log", cmd_log, RUN_SETUP | USE_PAGER },
+               { "log", cmd_log, RUN_SETUP },
                { "ls-files", cmd_ls_files, RUN_SETUP },
                { "ls-tree", cmd_ls_tree, RUN_SETUP },
                { "ls-remote", cmd_ls_remote },
@@ -380,7 +380,7 @@ static void handle_internal_command(int argc, const char **argv)
                { "send-pack", cmd_send_pack, RUN_SETUP },
                { "shortlog", cmd_shortlog, USE_PAGER },
                { "show-branch", cmd_show_branch, RUN_SETUP },
-               { "show", cmd_show, RUN_SETUP | USE_PAGER },
+               { "show", cmd_show, RUN_SETUP },
                { "status", cmd_status, RUN_SETUP | NEED_WORK_TREE },
                { "stripspace", cmd_stripspace },
                { "symbolic-ref", cmd_symbolic_ref, RUN_SETUP },
@@ -395,7 +395,7 @@ static void handle_internal_command(int argc, const char **argv)
                { "var", cmd_var },
                { "verify-tag", cmd_verify_tag, RUN_SETUP },
                { "version", cmd_version },
-               { "whatchanged", cmd_whatchanged, RUN_SETUP | USE_PAGER },
+               { "whatchanged", cmd_whatchanged, RUN_SETUP },
                { "write-tree", cmd_write_tree, RUN_SETUP },
                { "verify-pack", cmd_verify_pack },
                { "show-ref", cmd_show_ref, RUN_SETUP },