From: Junio C Hamano <gitster@pobox.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Git Mailing List <git@vger.kernel.org>
Subject: Re: [PATCH] pretty-print: de-tabify indented logs to make things line up properly
Date: Wed, 16 Mar 2016 14:55:42 -0700 [thread overview]
Message-ID: <xmqq37rq3x5t.fsf@gitster.mtv.corp.google.com> (raw)
In-Reply-To: <CA+55aFxLyMaur8Kd_uyewEeehPeuZXu=Hn11SSbTYd9O6FdDBA@mail.gmail.com> (Linus Torvalds's message of "Wed, 16 Mar 2016 12:50:20 -0700")
Linus Torvalds <torvalds@linux-foundation.org> writes:
> Here's an incremental patch that could be just smushed into my
> previous one. It doesn't change the behavior of "pp_handle_indent()",
> but I think it clarifies the code and makes future changes much easier
> (partly because now nobody has to worry about the continue case and
> the newline at the end of the line, so you can just print whatever you
> want and then return).
>
> What do you think?
I actually was hoping that strbuf_tabexpand_add() would be an
independently useful addition to strbuf_add*() family that does not
have to know the indentation and pretty-print-context, so burying
that new logic deep in the callchain like the patch below, while
letting it still be aware of "indent" value (and adding the leading
indent) does not look like a good abstraction from that point of
view.
The change to pp_remainder() looks like a nice cleanup for people
who read that function. I still think pp_add_line() should add the
indentation to sb in "if (indent)" block itself, and the called
helper should be a "I know how to tab-expand a string and add the
result to a strbuf" that we can eventually move to strbuf.[ch].
Things like adding CMIT_FMT_EXPAND_TABS can still then be done with
something like this:
strbuf_grow();
if (indent) {
strbuf_addchars(sb, ' ', indent);
- strbuf_tabexpand_add();
+ if (pp->format == EXPAND_TABS)
+ strbuf_tabexpand_add();
+ else
+ strbuf_add();
} else {
strbuf_add();
}
in pp_add_line(), so there is no difference between the ease of
future changes, I'd think.
> Linus
>
> pretty.c | 19 +++++++++++++------
> 1 file changed, 13 insertions(+), 6 deletions(-)
>
> diff --git a/pretty.c b/pretty.c
> index 0b40457f99f0..b9374a1708d1 100644
> --- a/pretty.c
> +++ b/pretty.c
> @@ -1699,6 +1699,18 @@ static int pp_handle_indent(struct strbuf *sb, int indent,
> return 1;
> }
>
> +static void pp_add_line(struct pretty_print_context *pp,
> + struct strbuf *sb, int indent,
> + const char *line, int linelen)
> +{
> + strbuf_grow(sb, linelen + indent + 20);
> + if (indent) {
> + if (pp_handle_indent(sb, indent, line, linelen))
> + return;
> + }
> + strbuf_add(sb, line, linelen);
> +}
> +
> void pp_remainder(struct pretty_print_context *pp,
> const char **msg_p,
> struct strbuf *sb,
> @@ -1721,12 +1733,7 @@ void pp_remainder(struct pretty_print_context *pp,
> }
> first = 0;
>
> - strbuf_grow(sb, linelen + indent + 20);
> - if (indent) {
> - if (pp_handle_indent(sb, indent, line, linelen))
> - linelen = 0;
> - }
> - strbuf_add(sb, line, linelen);
> + pp_add_line(pp, sb, indent, line, linelen);
> strbuf_addch(sb, '\n');
> }
> }
prev parent reply other threads:[~2016-03-16 21:55 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-16 16:29 [PATCH] pretty-print: de-tabify indented logs to make things line up properly Linus Torvalds
2016-03-16 16:52 ` Linus Torvalds
2016-03-16 18:01 ` Junio C Hamano
2016-03-16 18:21 ` Linus Torvalds
2016-03-16 19:32 ` Junio C Hamano
2016-03-16 19:47 ` Junio C Hamano
2016-03-16 19:59 ` Linus Torvalds
2016-03-16 21:37 ` Junio C Hamano
2016-03-16 22:04 ` Linus Torvalds
2016-03-17 23:13 ` [PATCH v2 1/4] " Junio C Hamano
2016-03-17 23:15 ` [PATCH v2 2/4] pretty-print: simplify the interaction between pp_handle_indent() and its caller Junio C Hamano
2016-03-17 23:15 ` [PATCH v2 3/4] pretty-print: further abstract out pp_handle_indent() Junio C Hamano
2016-03-17 23:16 ` [PATCH 4/4] pretty-print: add --pretty=noexpand Junio C Hamano
2016-03-17 23:23 ` Linus Torvalds
2016-03-17 23:40 ` Junio C Hamano
2016-03-18 5:08 ` Jeff King
2016-03-18 5:36 ` Linus Torvalds
2016-03-18 5:55 ` Jeff King
2016-03-18 5:44 ` Junio C Hamano
2016-03-23 23:23 ` [PATCH v3 0/5] Expanding tabs in "git log" output Junio C Hamano
2016-03-23 23:23 ` [PATCH v3 1/5] pretty-print: de-tabify indented logs to make things line up properly Junio C Hamano
2016-03-23 23:23 ` [PATCH v3 2/5] pretty-print: simplify the interaction between pp_handle_indent() and its caller Junio C Hamano
2016-03-23 23:23 ` [PATCH v3 3/5] pretty-print: further abstract out pp_handle_indent() Junio C Hamano
2016-03-23 23:23 ` [PATCH v3 4/5] pretty-print: limit expand-tabs to selected --pretty formats Junio C Hamano
2016-03-23 23:23 ` [PATCH v3 5/5] pretty-print: teach "--no-expand-tabs" option to "git log" Junio C Hamano
2016-03-23 23:47 ` [PATCH v3 0/5] Expanding tabs in "git log" output Linus Torvalds
2016-03-24 0:58 ` Jeff King
2016-03-24 5:17 ` Junio C Hamano
2016-03-24 7:05 ` Torsten Bögershausen
2016-03-24 15:37 ` Junio C Hamano
2016-03-24 18:22 ` Junio C Hamano
2016-03-25 9:34 ` Torsten Bögershausen
2016-03-25 14:13 ` Torsten Bögershausen
2016-03-25 16:41 ` Junio C Hamano
2016-03-25 16:25 ` Junio C Hamano
2016-03-29 23:15 ` [PATCH v4 0/3] " Junio C Hamano
2016-03-29 23:15 ` [PATCH v4 1/3] pretty: expand tabs in indented logs to make things line up properly Junio C Hamano
2016-03-30 0:17 ` Eric Sunshine
2016-03-30 18:20 ` Junio C Hamano
2016-03-29 23:15 ` [PATCH v4 2/3] pretty: enable --expand-tabs by default for selected pretty formats Junio C Hamano
2016-03-30 1:38 ` Jeff King
2016-03-30 19:18 ` Junio C Hamano
2016-03-29 23:15 ` [PATCH v4 3/3] pretty: allow tweaking tabwidth in --expand-tabs Junio C Hamano
2016-04-05 0:58 ` [PATCH v5 0/4] Expanding tabs in "git log" output Junio C Hamano
2016-04-05 0:58 ` [PATCH v5 1/4] pretty: expand tabs in indented logs to make things line up properly Junio C Hamano
2016-04-05 0:58 ` [PATCH v5 2/4] pretty: enable --expand-tabs by default for selected pretty formats Junio C Hamano
2016-04-05 0:58 ` [PATCH v5 3/4] pretty: allow tweaking tabwidth in --expand-tabs Junio C Hamano
2016-04-05 0:58 ` [PATCH v5 4/4] pretty: test --expand-tabs Junio C Hamano
2016-04-05 1:10 ` Eric Sunshine
2016-04-05 1:47 ` Jeff King
2016-04-05 6:25 ` Junio C Hamano
2016-04-05 1:52 ` Jeff King
2016-04-05 6:32 ` Junio C Hamano
2016-04-05 7:13 ` Perry Hutchison
2016-04-05 1:53 ` [PATCH v5 0/4] Expanding tabs in "git log" output Jeff King
2016-03-16 19:50 ` [PATCH] pretty-print: de-tabify indented logs to make things line up properly Linus Torvalds
2016-03-16 21:55 ` Junio C Hamano [this message]
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