Replace String::compose with fmt.

sed -i "/Plural-Forms/n;/%100/n;/scanf/n;s/%[123456789]/{}/g" src/lib/*.cc src/lib/*.h src/wx/*.cc src/tools/*.cc src/lib/po/*.po src/wx/po/*.po src/tools/po/*.po test/*.cc
sed -i "s/String::compose */fmt::format/g" src/lib/*.cc src/lib/*.h src/wx/*.cc src/tools/*.cc test/*.cc

1 files changed, 107 insertions, 107 deletions

diff --git a/src/lib/po/tr_TR.po b/src/lib/po/tr_TR.po
index ea215a40d..0fa7441a9 100644
--- a/src/lib/po/tr_TR.po
+++ b/src/lib/po/tr_TR.po
@@ -27,7 +27,7 @@ msgstr ""
 #: src/lib/video_content.cc:478
 msgid ""
 "\n"
-"Cropped to %1x%2"
+"Cropped to {}x{}"
 msgstr ""
 
 #: src/lib/video_content.cc:468
@@ -40,13 +40,13 @@ msgstr ""
 #: src/lib/video_content.cc:502
 msgid ""
 "\n"
-"Padded with black to fit container %1 (%2x%3)"
+"Padded with black to fit container {} ({}x{})"
 msgstr ""
 
 #: src/lib/video_content.cc:492
 msgid ""
 "\n"
-"Scaled to %1x%2"
+"Scaled to {}x{}"
 msgstr ""
 
 #: src/lib/video_content.cc:496 src/lib/video_content.cc:507
@@ -54,10 +54,10 @@ msgstr ""
 msgid " (%.2f:1)"
 msgstr ""
 
-#. TRANSLATORS: the %1 in this string will be filled in with a day of the week
+#. TRANSLATORS: the {} in this string will be filled in with a day of the week
 #. to say what day a job will finish.
 #: src/lib/job.cc:598
-msgid " on %1"
+msgid " on {}"
 msgstr ""
 
 #: src/lib/config.cc:1276
@@ -79,69 +79,69 @@ msgid "$JOB_NAME: $JOB_STATUS"
 msgstr ""
 
 #: src/lib/cross_common.cc:107
-msgid "%1 (%2 GB) [%3]"
+msgid "{} ({} GB) [{}]"
 msgstr ""
 
 #: src/lib/atmos_mxf_content.cc:96
-msgid "%1 [Atmos]"
+msgid "{} [Atmos]"
 msgstr ""
 
 #: src/lib/dcp_content.cc:356
-msgid "%1 [DCP]"
+msgid "{} [DCP]"
 msgstr ""
 
 #: src/lib/ffmpeg_content.cc:347
-msgid "%1 [audio]"
+msgid "{} [audio]"
 msgstr ""
 
 #: src/lib/ffmpeg_content.cc:343
-msgid "%1 [movie]"
+msgid "{} [movie]"
 msgstr ""
 
 #: src/lib/ffmpeg_content.cc:345 src/lib/video_mxf_content.cc:106
-msgid "%1 [video]"
+msgid "{} [video]"
 msgstr ""
 
 #: src/lib/job.cc:181 src/lib/job.cc:196
 msgid ""
-"%1 could not open the file %2 (%3).  Perhaps it does not exist or is in an "
+"{} could not open the file {} ({}).  Perhaps it does not exist or is in an "
 "unexpected format."
 msgstr ""
 
 #: src/lib/film.cc:1702
 msgid ""
-"%1 had to change your settings for referring to DCPs as OV.  Please review "
+"{} had to change your settings for referring to DCPs as OV.  Please review "
 "those settings to make sure they are what you want."
 msgstr ""
 
 #: src/lib/film.cc:1668
 msgid ""
-"%1 had to change your settings so that the film's frame rate is the same as "
+"{} had to change your settings so that the film's frame rate is the same as "
 "that of your Atmos content."
 msgstr ""
 
 #: src/lib/film.cc:1715
 msgid ""
-"%1 had to remove one of your custom reel boundaries as it no longer lies "
+"{} had to remove one of your custom reel boundaries as it no longer lies "
 "within the film."
 msgstr ""
 
 #: src/lib/film.cc:1713
 msgid ""
-"%1 had to remove some of your custom reel boundaries as they no longer lie "
+"{} had to remove some of your custom reel boundaries as they no longer lie "
 "within the film."
 msgstr ""
 
 #: src/lib/ffmpeg_content.cc:115
-msgid "%1 no longer supports the `%2' filter, so it has been turned off."
+msgid "{} no longer supports the `{}' filter, so it has been turned off."
 msgstr ""
 
 #: src/lib/config.cc:441 src/lib/config.cc:1251
-msgid "%1 notification"
+msgid "{} notification"
 msgstr ""
 
 #: src/lib/transcode_job.cc:180
-msgid "%1; %2/%3 frames"
+msgid "{}; {}/{} frames"
 msgstr ""
 
 #: src/lib/video_content.cc:463
@@ -230,11 +230,11 @@ msgstr ""
 
 #. TRANSLATORS: fps here is an abbreviation for frames per second
 #: src/lib/transcode_job.cc:183
-msgid "; %1 fps"
+msgid "; {} fps"
 msgstr ""
 
 #: src/lib/job.cc:603
-msgid "; %1 remaining; finishing at %2%3"
+msgid "; {} remaining; finishing at {}{}"
 msgstr ""
 
 #: src/lib/analytics.cc:58
@@ -263,7 +263,7 @@ msgstr ""
 #: src/lib/text_content.cc:230
 msgid ""
 "A subtitle or closed caption file in this project is marked with the "
-"language '%1', which %2 does not recognise.  The file's language has been "
+"language '{}', which {} does not recognise.  The file's language has been "
 "cleared."
 msgstr ""
 
@@ -291,7 +291,7 @@ msgid ""
 msgstr ""
 
 #: src/lib/job.cc:116
-msgid "An error occurred whilst handling the file %1."
+msgid "An error occurred whilst handling the file {}."
 msgstr ""
 
 #: src/lib/analyse_audio_job.cc:74
@@ -357,11 +357,11 @@ msgid ""
 msgstr ""
 
 #: src/lib/audio_content.cc:265
-msgid "Audio will be resampled from %1Hz to %2Hz"
+msgid "Audio will be resampled from {}Hz to {}Hz"
 msgstr ""
 
 #: src/lib/audio_content.cc:267
-msgid "Audio will be resampled to %1Hz"
+msgid "Audio will be resampled to {}Hz"
 msgstr ""
 
 #: src/lib/audio_content.cc:256
@@ -442,7 +442,7 @@ msgid "Cannot contain slashes"
 msgstr ""
 
 #: src/lib/exceptions.cc:79
-msgid "Cannot handle pixel format %1 during %2"
+msgid "Cannot handle pixel format {} during {}"
 msgstr ""
 
 #: src/lib/film.cc:1811
@@ -663,7 +663,7 @@ msgid "Content to be joined must use the same text language."
 msgstr ""
 
 #: src/lib/video_content.cc:454
-msgid "Content video is %1x%2"
+msgid "Content video is {}x{}"
 msgstr ""
 
 #: src/lib/upload_job.cc:66
@@ -672,8 +672,8 @@ msgstr ""
 
 #: src/lib/copy_to_drive_job.cc:59
 msgid ""
-"Copying %1\n"
-"to %2"
+"Copying {}\n"
+"to {}"
 msgstr ""
 
 #: src/lib/copy_to_drive_job.cc:120
@@ -681,41 +681,41 @@ msgid "Copying DCP"
 msgstr ""
 
 #: src/lib/copy_to_drive_job.cc:62
-msgid "Copying DCPs to %1"
+msgid "Copying DCPs to {}"
 msgstr ""
 
 #: src/lib/scp_uploader.cc:57
-msgid "Could not connect to server %1 (%2)"
+msgid "Could not connect to server {} ({})"
 msgstr ""
 
 #: src/lib/scp_uploader.cc:106
-msgid "Could not create remote directory %1 (%2)"
+msgid "Could not create remote directory {} ({})"
 msgstr ""
 
 #: src/lib/image_examiner.cc:65
-msgid "Could not decode JPEG2000 file %1 (%2)"
+msgid "Could not decode JPEG2000 file {} ({})"
 msgstr ""
 
 #: src/lib/ffmpeg_image_proxy.cc:164
-msgid "Could not decode image (%1)"
+msgid "Could not decode image ({})"
 msgstr ""
 
 #: src/lib/unzipper.cc:76
-msgid "Could not find file %1 in ZIP file"
+msgid "Could not find file {} in ZIP file"
 msgstr ""
 
 #: src/lib/encode_server_finder.cc:197
 msgid ""
-"Could not listen for remote encode servers.  Perhaps another instance of %1 "
+"Could not listen for remote encode servers.  Perhaps another instance of {} "
 "is running."
 msgstr ""
 
 #: src/lib/job.cc:180 src/lib/job.cc:195
-msgid "Could not open %1"
+msgid "Could not open {}"
 msgstr ""
 
 #: src/lib/curl_uploader.cc:102 src/lib/scp_uploader.cc:122
-msgid "Could not open %1 to send"
+msgid "Could not open {} to send"
 msgstr ""
 
 #: src/lib/internet.cc:167 src/lib/internet.cc:172
@@ -723,7 +723,7 @@ msgid "Could not open downloaded ZIP file"
 msgstr ""
 
 #: src/lib/internet.cc:179
-msgid "Could not open downloaded ZIP file (%1:%2: %3)"
+msgid "Could not open downloaded ZIP file ({}:{}: {})"
 msgstr ""
 
 #: src/lib/config.cc:1178
@@ -731,11 +731,11 @@ msgid "Could not open file for writing"
 msgstr ""
 
 #: src/lib/ffmpeg_file_encoder.cc:271
-msgid "Could not open output file %1 (%2)"
+msgid "Could not open output file {} ({})"
 msgstr ""
 
 #: src/lib/dcp_subtitle.cc:60
-msgid "Could not read subtitles (%1 / %2)"
+msgid "Could not read subtitles ({} / {})"
 msgstr ""
 
 #: src/lib/curl_uploader.cc:59
@@ -743,7 +743,7 @@ msgid "Could not start transfer"
 msgstr ""
 
 #: src/lib/curl_uploader.cc:110 src/lib/scp_uploader.cc:138
-msgid "Could not write to remote file (%1)"
+msgid "Could not write to remote file ({})"
 msgstr ""
 
 #: src/lib/util.cc:601
@@ -826,11 +826,11 @@ msgid ""
 "The KDMs are valid from $START_TIME until $END_TIME.\n"
 "\n"
 "Best regards,\n"
-"%1"
+"{}"
 msgstr ""
 
 #: src/lib/exceptions.cc:179
-msgid "Disk full when writing %1"
+msgid "Disk full when writing {}"
 msgstr ""
 
 #: src/lib/dolby_cp750.cc:31
@@ -838,7 +838,7 @@ msgid "Dolby CP650 or CP750"
 msgstr ""
 
 #: src/lib/internet.cc:124
-msgid "Download failed (%1 error %2)"
+msgid "Download failed ({} error {})"
 msgstr ""
 
 #: src/lib/frame_rate_change.cc:94
@@ -846,7 +846,7 @@ msgid "Each content frame will be doubled in the DCP.\n"
 msgstr ""
 
 #: src/lib/frame_rate_change.cc:96
-msgid "Each content frame will be repeated %1 more times in the DCP.\n"
+msgid "Each content frame will be repeated {} more times in the DCP.\n"
 msgstr ""
 
 #: src/lib/send_kdm_email_job.cc:94
@@ -854,7 +854,7 @@ msgid "Email KDMs"
 msgstr ""
 
 #: src/lib/send_kdm_email_job.cc:97
-msgid "Email KDMs for %1"
+msgid "Email KDMs for {}"
 msgstr ""
 
 #: src/lib/send_notification_email_job.cc:53
@@ -866,7 +866,7 @@ msgid "Email problem report"
 msgstr ""
 
 #: src/lib/send_problem_report_job.cc:72
-msgid "Email problem report for %1"
+msgid "Email problem report for {}"
 msgstr ""
 
 #: src/lib/dcp_film_encoder.cc:120 src/lib/ffmpeg_film_encoder.cc:135
@@ -878,11 +878,11 @@ msgid "Episode"
 msgstr ""
 
 #: src/lib/exceptions.cc:86
-msgid "Error in subtitle file: saw %1 while expecting %2"
+msgid "Error in subtitle file: saw {} while expecting {}"
 msgstr ""
 
 #: src/lib/job.cc:625
-msgid "Error: %1"
+msgid "Error: {}"
 msgstr ""
 
 #: src/lib/dcp_content_type.cc:69
@@ -922,7 +922,7 @@ msgid "FCP XML subtitles"
 msgstr ""
 
 #: src/lib/scp_uploader.cc:69
-msgid "Failed to authenticate with server (%1)"
+msgid "Failed to authenticate with server ({})"
 msgstr ""
 
 #: src/lib/job.cc:140 src/lib/job.cc:154
@@ -974,7 +974,7 @@ msgid "Full"
 msgstr ""
 
 #: src/lib/ffmpeg_content.cc:564
-msgid "Full (0-%1)"
+msgid "Full (0-{})"
 msgstr ""
 
 #: src/lib/ratio.cc:57
@@ -1066,7 +1066,7 @@ msgid ""
 msgstr ""
 
 #: src/lib/job.cc:170 src/lib/job.cc:205 src/lib/job.cc:265 src/lib/job.cc:275
-msgid "It is not known what caused this error.  %1"
+msgid "It is not known what caused this error.  {}"
 msgstr ""
 
 #: src/lib/ffmpeg_content.cc:614
@@ -1119,7 +1119,7 @@ msgid "Limited"
 msgstr ""
 
 #: src/lib/ffmpeg_content.cc:557
-msgid "Limited / video (%1-%2)"
+msgid "Limited / video ({}-{})"
 msgstr ""
 
 #: src/lib/ffmpeg_content.cc:629
@@ -1168,7 +1168,7 @@ msgid "Mismatched video sizes in DCP"
 msgstr ""
 
 #: src/lib/exceptions.cc:72
-msgid "Missing required setting %1"
+msgid "Missing required setting {}"
 msgstr ""
 
 #: src/lib/job.cc:561
@@ -1212,11 +1212,11 @@ msgid "OK"
 msgstr ""
 
 #: src/lib/job.cc:622
-msgid "OK (ran for %1 from %2 to %3)"
+msgid "OK (ran for {} from {} to {})"
 msgstr ""
 
 #: src/lib/job.cc:620
-msgid "OK (ran for %1)"
+msgid "OK (ran for {})"
 msgstr ""
 
 #: src/lib/content.cc:106
@@ -1237,7 +1237,7 @@ msgstr ""
 
 #: src/lib/transcode_job.cc:116
 msgid ""
-"Open the project in %1, check the settings, then save it before trying again."
+"Open the project in {}, check the settings, then save it before trying again."
 msgstr ""
 
 #: src/lib/filter.cc:92 src/lib/filter.cc:93 src/lib/filter.cc:94
@@ -1260,7 +1260,7 @@ msgstr ""
 #: src/lib/util.cc:1136
 msgid ""
 "Please report this problem by using Help -> Report a problem or via email to "
-"%1"
+"{}"
 msgstr ""
 
 #: src/lib/dcp_content_type.cc:61
@@ -1276,7 +1276,7 @@ msgid "Prepared for video frame rate"
 msgstr ""
 
 #: src/lib/exceptions.cc:107
-msgid "Programming error at %1:%2 %3"
+msgid "Programming error at {}:{} {}"
 msgstr ""
 
 #: src/lib/dcp_content_type.cc:65
@@ -1393,12 +1393,12 @@ msgid "SMPTE ST 432-1 D65 (2010)"
 msgstr ""
 
 #: src/lib/scp_uploader.cc:47
-msgid "SSH error [%1]"
+msgid "SSH error [{}]"
 msgstr ""
 
 #: src/lib/scp_uploader.cc:63 src/lib/scp_uploader.cc:76
 #: src/lib/scp_uploader.cc:83
-msgid "SSH error [%1] (%2)"
+msgid "SSH error [{}] ({})"
 msgstr ""
 
 #: src/lib/job.cc:571
@@ -1426,7 +1426,7 @@ msgid "Size"
 msgstr ""
 
 #: src/lib/audio_content.cc:260
-msgid "Some audio will be resampled to %1Hz"
+msgid "Some audio will be resampled to {}Hz"
 msgstr ""
 
 #: src/lib/transcode_job.cc:121
@@ -1450,7 +1450,7 @@ msgstr ""
 
 #: src/lib/hints.cc:605
 msgid ""
-"Some of your closed captions span more than %1 lines, so they will be "
+"Some of your closed captions span more than {} lines, so they will be "
 "truncated."
 msgstr ""
 
@@ -1527,12 +1527,12 @@ msgid "The certificate chain for signing is invalid"
 msgstr ""
 
 #: src/lib/exceptions.cc:100
-msgid "The certificate chain for signing is invalid (%1)"
+msgid "The certificate chain for signing is invalid ({})"
 msgstr ""
 
 #: src/lib/hints.cc:744
 msgid ""
-"The certificate chain that %1 uses for signing DCPs and KDMs contains a "
+"The certificate chain that {} uses for signing DCPs and KDMs contains a "
 "small error which will prevent DCPs from being validated correctly on some "
 "systems.  It is advisable to re-create the signing certificate chain by "
 "clicking the \"Re-make certificates and key...\" button in the Keys page of "
@@ -1541,7 +1541,7 @@ msgstr ""
 
 #: src/lib/hints.cc:752
 msgid ""
-"The certificate chain that %1 uses for signing DCPs and KDMs has a validity "
+"The certificate chain that {} uses for signing DCPs and KDMs has a validity "
 "period that is too long.  This will cause problems playing back DCPs on some "
 "systems. It is advisable to re-create the signing certificate chain by "
 "clicking the \"Re-make certificates and key...\" button in the Keys page of "
@@ -1550,7 +1550,7 @@ msgstr ""
 
 #: src/lib/video_decoder.cc:70
 msgid ""
-"The content file %1 is set as 3D but does not appear to contain 3D images.  "
+"The content file {} is set as 3D but does not appear to contain 3D images.  "
 "Please set it to 2D.  You can still make a 3D DCP from this content by "
 "ticking the 3D option in the DCP video tab."
 msgstr ""
@@ -1562,19 +1562,19 @@ msgid ""
 msgstr ""
 
 #: src/lib/playlist.cc:245
-msgid "The file %1 has been moved %2 milliseconds earlier."
+msgid "The file {} has been moved {} milliseconds earlier."
 msgstr ""
 
 #: src/lib/playlist.cc:240
-msgid "The file %1 has been moved %2 milliseconds later."
+msgid "The file {} has been moved {} milliseconds later."
 msgstr ""
 
 #: src/lib/playlist.cc:265
-msgid "The file %1 has been trimmed by %2 milliseconds less."
+msgid "The file {} has been trimmed by {} milliseconds less."
 msgstr ""
 
 #: src/lib/playlist.cc:260
-msgid "The file %1 has been trimmed by %2 milliseconds more."
+msgid "The file {} has been trimmed by {} milliseconds more."
 msgstr ""
 
 #: src/lib/hints.cc:268
@@ -1612,25 +1612,25 @@ msgid ""
 msgstr ""
 
 #: src/lib/util.cc:986
-msgid "This KDM was made for %1 but not for its leaf certificate."
+msgid "This KDM was made for {} but not for its leaf certificate."
 msgstr ""
 
 #: src/lib/util.cc:984
-msgid "This KDM was not made for %1's decryption certificate."
+msgid "This KDM was not made for {}'s decryption certificate."
 msgstr ""
 
 #: src/lib/job.cc:142
 msgid ""
 "This error has probably occurred because you are running the 32-bit version "
-"of %1 and trying to use too many encoding threads.  Please reduce the "
-"'number of threads %2 should use' in the General tab of Preferences and try "
+"of {} and trying to use too many encoding threads.  Please reduce the "
+"'number of threads {} should use' in the General tab of Preferences and try "
 "again."
 msgstr ""
 
 #: src/lib/job.cc:156
 msgid ""
 "This error has probably occurred because you are running the 32-bit version "
-"of %1.  Please re-install %2 with the 64-bit installer and try again."
+"of {}.  Please re-install {} with the 64-bit installer and try again."
 msgstr ""
 
 #: src/lib/exceptions.cc:114
@@ -1641,13 +1641,13 @@ msgstr ""
 
 #: src/lib/film.cc:544
 msgid ""
-"This film was created with a newer version of %1, and it cannot be loaded "
+"This film was created with a newer version of {}, and it cannot be loaded "
 "into this version.  Sorry!"
 msgstr ""
 
 #: src/lib/film.cc:525
 msgid ""
-"This film was created with an older version of %1, and unfortunately it "
+"This film was created with an older version of {}, and unfortunately it "
 "cannot be loaded into this version.  You will need to create a new Film, re-"
 "add your content and set it up again.  Sorry!"
 msgstr ""
@@ -1665,7 +1665,7 @@ msgid "Trailer"
 msgstr ""
 
 #: src/lib/transcode_job.cc:75
-msgid "Transcoding %1"
+msgid "Transcoding {}"
 msgstr ""
 
 #: src/lib/dcp_content_type.cc:58
@@ -1697,7 +1697,7 @@ msgid "Unknown error"
 msgstr ""
 
 #: src/lib/ffmpeg_decoder.cc:378
-msgid "Unrecognised audio sample format (%1)"
+msgid "Unrecognised audio sample format ({})"
 msgstr ""
 
 #: src/lib/filter.cc:102
@@ -1745,7 +1745,7 @@ msgid "Vertical flip"
 msgstr ""
 
 #: src/lib/fcpxml.cc:69
-msgid "Video refers to missing asset %1"
+msgid "Video refers to missing asset {}"
 msgstr ""
 
 #: src/lib/util.cc:596
@@ -1774,16 +1774,16 @@ msgstr ""
 
 #: src/lib/hints.cc:209
 msgid ""
-"You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
+"You are set up for a DCP at a frame rate of {} fps.  This frame rate is not "
 "supported by all projectors.  It is advisable to change the DCP frame rate "
-"to %2 fps."
+"to {} fps."
 msgstr ""
 
 #: src/lib/hints.cc:193
 msgid ""
-"You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
+"You are set up for a DCP at a frame rate of {} fps.  This frame rate is not "
 "supported by all projectors.  You may want to consider changing your frame "
-"rate to %2 fps."
+"rate to {} fps."
 msgstr ""
 
 #: src/lib/hints.cc:203
@@ -1794,7 +1794,7 @@ msgstr ""
 
 #: src/lib/hints.cc:126
 msgid ""
-"You are using %1's stereo-to-5.1 upmixer.  This is experimental and may "
+"You are using {}'s stereo-to-5.1 upmixer.  This is experimental and may "
 "result in poor-quality audio.  If you continue, you should listen to the "
 "resulting DCP in a cinema to make sure that it sounds good."
 msgstr ""
@@ -1807,7 +1807,7 @@ msgstr ""
 
 #: src/lib/hints.cc:307
 msgid ""
-"You have %1 files that look like they are VOB files from DVD. You should "
+"You have {} files that look like they are VOB files from DVD. You should "
 "join them to ensure smooth joins between the files."
 msgstr ""
 
@@ -1835,7 +1835,7 @@ msgstr ""
 
 #: src/lib/hints.cc:770
 msgid ""
-"Your DCP has %1 audio channels, rather than 8 or 16.  This may cause some "
+"Your DCP has {} audio channels, rather than 8 or 16.  This may cause some "
 "distributors to raise QC errors when they check your DCP.  To avoid this, "
 "set the DCP audio channels to 8 or 16."
 msgstr ""
@@ -1844,7 +1844,7 @@ msgstr ""
 msgid ""
 "Your DCP has fewer than 6 audio channels.  This may cause problems on some "
 "projectors.  You may want to set the DCP to have 6 channels.  It does not "
-"matter if your content has fewer channels, as %1 will fill the extras with "
+"matter if your content has fewer channels, as {} will fill the extras with "
 "silence."
 msgstr ""
 
@@ -1856,7 +1856,7 @@ msgstr ""
 
 #: src/lib/hints.cc:357
 msgid ""
-"Your audio level is very high (on %1).  You should reduce the gain of your "
+"Your audio level is very high (on {}).  You should reduce the gain of your "
 "audio content."
 msgstr ""
 
@@ -1884,10 +1884,10 @@ msgstr ""
 msgid "[subtitles]"
 msgstr ""
 
-#. TRANSLATORS: _reel%1 here is to be added to an export filename to indicate
-#. which reel it is.  Preserve the %1; it will be replaced with the reel number.
+#. TRANSLATORS: _reel{} here is to be added to an export filename to indicate
+#. which reel it is.  Preserve the {}; it will be replaced with the reel number.
 #: src/lib/ffmpeg_film_encoder.cc:152
-msgid "_reel%1"
+msgid "_reel{}"
 msgstr ""
 
 #: src/lib/audio_content.cc:306
@@ -1907,7 +1907,7 @@ msgid "content type"
 msgstr ""
 
 #: src/lib/uploader.cc:79
-msgid "copying %1"
+msgid "copying {}"
 msgstr ""
 
 #: src/lib/ffmpeg.cc:119
@@ -1915,47 +1915,47 @@ msgid "could not find stream information"
 msgstr ""
 
 #: src/lib/reel_writer.cc:404
-msgid "could not move atmos asset into the DCP (%1)"
+msgid "could not move atmos asset into the DCP ({})"
 msgstr ""
 
 #: src/lib/reel_writer.cc:387
-msgid "could not move audio asset into the DCP (%1)"
+msgid "could not move audio asset into the DCP ({})"
 msgstr ""
 
 #: src/lib/exceptions.cc:39
-msgid "could not open file %1 for read (%2)"
+msgid "could not open file {} for read ({})"
 msgstr ""
 
 #: src/lib/exceptions.cc:38
-msgid "could not open file %1 for read/write (%2)"
+msgid "could not open file {} for read/write ({})"
 msgstr ""
 
 #: src/lib/exceptions.cc:39
-msgid "could not open file %1 for write (%2)"
+msgid "could not open file {} for write ({})"
 msgstr ""
 
 #: src/lib/exceptions.cc:58
-msgid "could not read from file %1 (%2)"
+msgid "could not read from file {} ({})"
 msgstr ""
 
 #: src/lib/exceptions.cc:65
-msgid "could not write to file %1 (%2)"
+msgid "could not write to file {} ({})"
 msgstr ""
 
 #: src/lib/dcpomatic_socket.cc:109
-msgid "error during async_connect (%1)"
+msgid "error during async_connect ({})"
 msgstr ""
 
 #: src/lib/dcpomatic_socket.cc:79
-msgid "error during async_connect: (%1)"
+msgid "error during async_connect: ({})"
 msgstr ""
 
 #: src/lib/dcpomatic_socket.cc:201
-msgid "error during async_read (%1)"
+msgid "error during async_read ({})"
 msgstr ""
 
 #: src/lib/dcpomatic_socket.cc:160
-msgid "error during async_write (%1)"
+msgid "error during async_write ({})"
 msgstr ""
 
 #: src/lib/content.cc:472 src/lib/content.cc:481
@@ -1975,7 +1975,7 @@ msgstr ""
 #: src/lib/dcp_content.cc:753
 msgid ""
 "it has a different number of audio channels than the project; set the "
-"project to have %1 channels."
+"project to have {} channels."
 msgstr ""
 
 #. TRANSLATORS: this string will follow "Cannot reference this DCP: "