path: root/2023/info/overlay-before.md

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Format: 21-min talk; Q&A: BigBlueButton conference room  
Status: Q&A to be extracted from the room recordings  





# Talk

<div class="vid"><video controls preload="none" id="overlay-mainVideo"><source src="https://media.emacsconf.org/2023/emacsconf-2023-overlay--improving-compiler-diagnostics-with-overlays--jeff-trull--main.webm" />captions="""<track label="English" kind="captions" srclang="en" src="/2023/captions/emacsconf-2023-overlay--improving-compiler-diagnostics-with-overlays--jeff-trull--main.vtt" default />"""<track kind="chapters" label="Chapters" src="/2023/captions/emacsconf-2023-overlay--improving-compiler-diagnostics-with-overlays--jeff-trull--main--chapters.vtt" /><p><em>Your browser does not support the video tag. Please download the video instead.</em></p></video>[[!template id="chapters" vidid="overlay-mainVideo" data="""
00:00.000 Introduction
00:33.560 Overlays and what they can do
02:02.500 Simple overlay example - creating an overlay
02:35.700 Adding properties
03:10.940 Deleting an overlay
03:24.660 Setting fonts the right way
03:59.540 More properties
04:12.580 Visibility
04:49.780 Adding text
05:27.820 Custom properties
05:45.380 Notes on properties
06:36.100 Improving C++ compiler output
08:17.680 The problem with C++ error messages
08:30.240 Many standard class templates have default arguments
08:47.520 Some types are aliases for longer things, too
09:20.960 Reporting type information accurately means long lines
10:18.240 Emacs can help - Treat C++ type names as just another kind of balanced expression
11:49.320 Add overlays to improve readability
12:22.400 Create a minor mode that runs during compilation
12:59.500 Parsing types as balanced expressions
14:16.100 Indent and fill with overlays - Use ancient "pretty printing" algorithms"
14:52.260 Overlays can mimic line breaks and indentation
15:14.520 Hiding details - Marking depths with overlays
17:12.660 Hiding to a target depth
18:04.900 Demo
20:10.220 Conclusion

"""]]<div></div>Duration: 20:57 minutes<div class="files resources"><ul><li><a href="https://media.emacsconf.org/2023/emacsconf-2023-overlay--improving-compiler-diagnostics-with-overlays--jeff-trull--expr_depth.svg">Download --expr_depth.svg</a></li><li><a href="https://media.emacsconf.org/2023/emacsconf-2023-overlay--improving-compiler-diagnostics-with-overlays--jeff-trull--intro.vtt">Download --intro.vtt</a></li><li><a href="https://media.emacsconf.org/2023/emacsconf-2023-overlay--improving-compiler-diagnostics-with-overlays--jeff-trull--intro.webm">Download --intro.webm</a></li><li><a href="https://media.emacsconf.org/2023/emacsconf-2023-overlay--improving-compiler-diagnostics-with-overlays--jeff-trull--main--chapters.vtt">Download --main--chapters.vtt</a></li><li><a href="https://media.emacsconf.org/2023/emacsconf-2023-overlay--improving-compiler-diagnostics-with-overlays--jeff-trull--main.opus">Download --main.opus (15MB)</a></li><li><a href="https://media.emacsconf.org/2023/emacsconf-2023-overlay--improving-compiler-diagnostics-with-overlays--jeff-trull--main.vtt">Download --main.vtt</a></li><li><a href="https://media.emacsconf.org/2023/emacsconf-2023-overlay--improving-compiler-diagnostics-with-overlays--jeff-trull--main.webm">Download --main.webm (63MB)</a></li><li><a href="https://media.emacsconf.org/2023/emacsconf-2023-overlay--improving-compiler-diagnostics-with-overlays--jeff-trull--pad.html">Download --pad.html</a></li><li><a href="https://media.emacsconf.org/2023/emacsconf-2023-overlay--improving-compiler-diagnostics-with-overlays--jeff-trull--pad.md">Download --pad.md</a></li><li><a href="https://media.emacsconf.org/2023/emacsconf-2023-overlay--improving-compiler-diagnostics-with-overlays--jeff-trull--testdata.org">Download --testdata.org</a></li><li><a href="https://media.emacsconf.org/2023/emacsconf-2023-overlay--improving-compiler-diagnostics-with-overlays--jeff-trull.org">Download .org</a></li><li><a href="https://toobnix.org/w/5fJkawU4R9b1dJq5BcDykx">View on Toobnix</a></li></ul></div></div>

# Q&A

<div class="vid"><video controls preload="none" id="overlay-qanda"><source src="https://media.emacsconf.org/2023/emacsconf-2023-overlay--improving-compiler-diagnostics-with-overlays--jeff-trull--answers.webm" /><p><em>Your browser does not support the video tag. Please download the video instead.</em></p></video><div>Listen to just the audio:<br /><audio controls preload="none" id="overlay-qanda-audio" src="https://media.emacsconf.org/2023/emacsconf-2023-overlay--improving-compiler-diagnostics-with-overlays--jeff-trull--answers.opus"></audio></div><div></div>Duration: 11:48 minutes<div class="files resources"><ul><li><a href="https://media.emacsconf.org/2023/emacsconf-2023-overlay--improving-compiler-diagnostics-with-overlays--jeff-trull--answers.opus">Download --answers.opus (12MB)</a></li><li><a href="https://media.emacsconf.org/2023/emacsconf-2023-overlay--improving-compiler-diagnostics-with-overlays--jeff-trull--answers.webm">Download --answers.webm (20MB)</a></li></ul></div></div>
# Description
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