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Robert Griesemer a86362e07f go/printer: don't emit unnecessary //line directives before empty lines
1) Split atLineBegin into its two components: writing of // line directives
and writing of indentation (no functionality changes).

2) Don't call writeLineDirective at the beginning of a line if we're
writing white space - it's not necessary. This is the bug fix.

3) Move testing of the SourcePos mode out of writeLineDirective and
into the (single) caller. Clearer and more efficient.

(Instead of these 3 changes one could also have simply called the
original atLineBegin with position p.out rather than p.pos. This
would have caused atLineBegin to not write a line directive.
Factoring the code seemed like a cleaner and more direct approach.)

Fixes #5945.

Change-Id: Ia8710806b6d3d4e5044116b142c036a4ab5a1764
Reviewed-on: https://go-review.googlesource.com/44651
Reviewed-by: Alan Donovan <adonovan@google.com>
2017-06-02 20:07:51 +00:00
.github doc: improve issue template and contribution guidelines 2017-02-11 20:42:06 +00:00
api api: update next.txt 2017-05-02 19:34:49 +00:00
doc doc: update bootstrap archive URL 2017-05-31 21:03:26 +00:00
lib/time *.bash: always use the same string equality operator 2017-03-14 21:46:31 +00:00
misc misc/cgo/testcarchive: fix go env error message 2017-05-24 22:27:16 +00:00
src go/printer: don't emit unnecessary //line directives before empty lines 2017-06-02 20:07:51 +00:00
test cmd/compile: retain source positions of arguments to inlined calls 2017-06-02 13:41:01 +00:00
.gitattributes
.gitignore .gitignore: change path to zbootstrap.go 2017-04-19 02:13:58 +00:00
AUTHORS A+C: automated update 2016-12-21 03:22:22 +00:00
CONTRIBUTING.md doc: improve issue template and contribution guidelines 2017-02-11 20:42:06 +00:00
CONTRIBUTORS A+C: automated update 2016-12-21 03:22:22 +00:00
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README.md readme: add attribution for the Gopher image 2017-02-03 19:39:41 +00:00
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