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Re: [PATCH] diff.c: color moved lines differently

From
Stefan Beller <sbeller@google.com>
Date
Jun 14, 2017, 18:55 UTC
Message-ID
<CAGZ79kaqjQYmkt77kk5m=fdBfbZAvwd0YhhT7=O5b-FkQmDfHg@mail.gmail.com>
In-Reply-To
<20170613155158.2454d9c7@twelve2.svl.corp.google.com>
On Tue, Jun 13, 2017 at 3:51 PM, Jonathan Tan <jonathantanmy@google.com> wrote:
Show 21 quoted lines
> On Wed, 31 May 2017 17:24:29 -0700
> Stefan Beller <sbeller@google.com> wrote:
>
>> When a patch consists mostly of moving blocks of code around, it can
>> be quite tedious to ensure that the blocks are moved verbatim, and not
>> undesirably modified in the move. To that end, color blocks that are
>> moved within the same patch differently. For example (OM, del, add,
>> and NM are different colors):
>
> [snip]
>
> Junio asks "are we happy with these changes" [1] and my answer is, in
> general, yes - this seems like a very useful feature to have, and I'm OK
> with the current design.
>
> I do feel a bit of unease at how the emitted strings are collected
> without many guarantees as to their contents (e.g. whether they are full
> lines or even whether they originate from the text of a file), but this
> is already true for the existing code. The potential danger is that we
> are now relying more on the format of these strings, but we don't plan
> to do anything other than to color them, so this seems fine.
I will add comments into the code for that.
>
> I would also prefer if there was only one coloring method, to ease
> testing, but I can tolerate the current multiplicity of options.

I *think* by now everyone involved in the discussion agrees that we want Zebra + optional aggressive dimming (inside blocks as well as at bounds that are not adjacent to other blocks, i.e. anything non-adjacent to a different block)

Previous: Jonathan TanNext: Stefan Beller
Message 39 of 125 in “[PATCHv5 00/17] Diff machine: highlight moved lines.”
  1. Stefan BellerMay 24, 2017
  2. 01/17 diff: readability fixStefan Beller, May 24, 2017
  3. 03/17 diff.c: factor out diff_flush_patch_all_file_pairsStefan Beller, May 24, 2017
  4. 09/17 submodule.c: convert show_submodule_summary to use emit_line_fmtStefan Beller, May 24, 2017
  5. 04/17 diff: introduce more flexible emit functionStefan Beller, May 24, 2017
  6. Jonathan TanJun 13, 2017
  7. Stefan BellerJun 13, 2017
  8. Jonathan TanJun 13, 2017
  9. 05/17 diff.c: convert fn_out_consume to use emit_lineStefan Beller, May 24, 2017
  10. 02/17 diff: move line ending check into emit_hunk_headerStefan Beller, May 24, 2017
  11. 07/17 diff.c: convert emit_rewrite_diff to use emit_line_*Stefan Beller, May 24, 2017
  12. 15/17 diff.c: emit_line includes whitespace highlightingStefan Beller, May 24, 2017
  13. 11/17 diff.c: convert show_stats to use emit_line_*Stefan Beller, May 24, 2017
  14. 17/17 diff.c: color moved lines differentlyStefan Beller, May 24, 2017
  15. Junio C HamanoMay 25, 2017
  16. Stefan BellerMay 25, 2017
  17. 10/17 diff.c: convert emit_binary_diff_body to use emit_line_*Stefan Beller, May 24, 2017
  18. 08/17 diff.c: convert emit_rewrite_lines to use emit_line_*Stefan Beller, May 24, 2017
  19. 16/17 diff: buffer all output if asked toStefan Beller, May 24, 2017
  20. Junio C HamanoMay 25, 2017
  21. Stefan BellerMay 25, 2017
  22. Junio C HamanoMay 26, 2017
  23. Jonathan TanJun 13, 2017
  24. Stefan BellerJun 14, 2017
  25. 12/17 diff.c: convert word diffing to use emit_line_*Stefan Beller, May 24, 2017
  26. 14/17 diff.c: convert diff_summary to use emit_line_*Stefan Beller, May 24, 2017
  27. 13/17 diff.c: convert diff_flush to use emit_line_*Stefan Beller, May 24, 2017
  28. 06/17 diff.c: convert builtin_diff to use emit_line_*Stefan Beller, May 24, 2017
  29. Junio C HamanoMay 25, 2017
  30. Stefan BellerMay 25, 2017
  31. Junio C HamanoMay 26, 2017
  32. Stefan BellerMay 26, 2017
  33. 0/1 Diff machine: highlight moved lines.Stefan Beller, May 27, 2017
  34. 1/1 diff.c: color moved lines differentlyStefan Beller, May 27, 2017
  35. Philip OakleyMay 27, 2017
  36. Stefan BellerMay 30, 2017
  37. diff.c: color moved lines differentlyStefan Beller, Jun 1, 2017
  38. Jonathan TanJun 13, 2017
  39. Stefan BellerJun 14, 2017
  40. 00/26 reroll of sb/diff-color-movedStefan Beller, Jun 20, 2017
  41. 02/26 diff.c: move line ending check into emit_hunk_headerStefan Beller, Jun 20, 2017
  42. 03/26 diff.c: factor out diff_flush_patch_all_file_pairsStefan Beller, Jun 20, 2017
  43. 06/26 diff.c: emit_diff_symbol learns DIFF_SYMBOL_CONTEXT_FRAGINFOStefan Beller, Jun 20, 2017
  44. 07/26 diff.c: emit_diff_symbol learns DIFF_SYMBOL_NO_LF_EOFStefan Beller, Jun 20, 2017
  45. 08/26 diff.c: migrate emit_line_checked to use emit_diff_symbolStefan Beller, Jun 20, 2017
  46. Junio C HamanoJun 21, 2017
  47. Stefan BellerJun 22, 2017
  48. Stefan BellerJun 22, 2017
  49. Junio C HamanoJun 23, 2017
  50. 11/26 diff.c: emit_diff_symbol learns DIFF_SYMBOL_FILEPAIRStefan Beller, Jun 20, 2017
  51. Jonathan TanJun 20, 2017
  52. Junio C HamanoJun 21, 2017
  53. Stefan BellerJun 22, 2017
  54. 04/26 diff.c: introduce emit_diff_symbolStefan Beller, Jun 20, 2017
  55. Junio C HamanoJun 21, 2017
  56. Stefan BellerJun 21, 2017
  57. Junio C HamanoJun 21, 2017
  58. Junio C HamanoJun 21, 2017
  59. Stefan BellerJun 21, 2017
  60. Junio C HamanoJun 21, 2017
  61. Stefan BellerJun 21, 2017
  62. Brandon WilliamsJun 21, 2017
  63. Junio C HamanoJun 21, 2017
  64. Brandon WilliamsJun 21, 2017
  65. 15/26 submodule.c: migrate diff output to use emit_diff_symbolStefan Beller, Jun 20, 2017
  66. Jonathan TanJun 20, 2017
  67. 19/26 diff.c: emit_diff_symbol learns about DIFF_SYMBOL_STAT_SEPStefan Beller, Jun 20, 2017
  68. 12/26 diff.c: emit_diff_symbol learns DIFF_SYMBOL_HEADERStefan Beller, Jun 20, 2017
  69. 17/26 diff.c: convert show_stats to use emit_diff_symbolStefan Beller, Jun 20, 2017
  70. Brandon WilliamsJun 21, 2017
  71. Stefan BellerJun 21, 2017
  72. 18/26 diff.c: convert word diffing to use emit_diff_symbolStefan Beller, Jun 20, 2017
  73. 25/26 diff: document the new --color-moved settingStefan Beller, Jun 20, 2017
  74. 14/26 diff.c: emit_diff_symbol learns DIFF_SYMBOL_REWRITE_DIFFStefan Beller, Jun 20, 2017
  75. 26/26 diff.c: have a "machine parseable" move coloringStefan Beller, Jun 20, 2017
  76. Stefan BellerJun 20, 2017
  77. Ævar Arnfjörð BjarmasonJun 23, 2017
  78. Brandon WilliamsJun 21, 2017
  79. Junio C HamanoJun 21, 2017
  80. Stefan BellerJun 21, 2017
  81. 20/26 diff.c: emit_diff_symbol learns about DIFF_SYMBOL_SUMMARYStefan Beller, Jun 20, 2017
  82. 21/26 diff.c: buffer all output if asked toStefan Beller, Jun 20, 2017
  83. 24/26 diff.c: add dimming to moved line detectionStefan Beller, Jun 20, 2017
  84. Junio C HamanoJun 21, 2017
  85. 16/26 diff.c: convert emit_binary_diff_body to use emit_diff_symbolStefan Beller, Jun 20, 2017
  86. Junio C HamanoJun 21, 2017
  87. 23/26 diff.c: color moved lines differently, plain modeStefan Beller, Jun 20, 2017
  88. 09/26 diff.c: emit_diff_symbol learns DIFF_SYMBOL_WORDS{_PORCELAIN}Stefan Beller, Jun 20, 2017
  89. 22/26 diff.c: color moved lines differentlyStefan Beller, Jun 20, 2017
  90. Jonathan TanJun 20, 2017
  91. Stefan BellerJun 20, 2017
  92. 05/26 diff.c: emit_diff_symbol learns DIFF_SYMBOL_CONTEXT_MARKERStefan Beller, Jun 20, 2017
  93. 10/26 diff.c: emit_diff_symbol learns DIFF_SYMBOL_CONTEXT_INCOMPLETEStefan Beller, Jun 20, 2017
  94. 13/26 diff.c: emit_diff_symbol learns about DIFF_SYMBOL_BINARY_FILESStefan Beller, Jun 20, 2017
  95. Junio C HamanoJun 21, 2017
  96. Stefan BellerJun 21, 2017
  97. 01/26 diff.c: readability fixStefan Beller, Jun 20, 2017
  98. 00/25 reroll of sb/diff-color-movedStefan Beller, Jun 23, 2017
  99. 02/25 diff.c: move line ending check into emit_hunk_headerStefan Beller, Jun 23, 2017
  100. 04/25 diff.c: introduce emit_diff_symbolStefan Beller, Jun 23, 2017
  101. Junio C HamanoJun 23, 2017
  102. Stefan BellerJun 23, 2017
  103. 06/25 diff.c: emit_diff_symbol learns DIFF_SYMBOL_CONTEXT_FRAGINFOStefan Beller, Jun 23, 2017
  104. 03/25 diff.c: factor out diff_flush_patch_all_file_pairsStefan Beller, Jun 23, 2017
  105. 05/25 diff.c: emit_diff_symbol learns DIFF_SYMBOL_CONTEXT_MARKERStefan Beller, Jun 23, 2017
  106. 09/25 diff.c: emit_diff_symbol learns DIFF_SYMBOL_WORDS[_PORCELAIN]Stefan Beller, Jun 23, 2017
  107. 07/25 diff.c: emit_diff_symbol learns DIFF_SYMBOL_NO_LF_EOFStefan Beller, Jun 23, 2017
  108. 13/25 diff.c: emit_diff_symbol learns about DIFF_SYMBOL_BINARY_FILESStefan Beller, Jun 23, 2017
  109. 12/25 diff.c: emit_diff_symbol learns DIFF_SYMBOL_HEADERStefan Beller, Jun 23, 2017
  110. 14/25 diff.c: emit_diff_symbol learns DIFF_SYMBOL_REWRITE_DIFFStefan Beller, Jun 23, 2017
  111. 23/25 diff.c: color moved lines differently, plain modeStefan Beller, Jun 23, 2017
  112. 22/25 diff.c: color moved lines differentlyStefan Beller, Jun 23, 2017
  113. 15/25 submodule.c: migrate diff output to use emit_diff_symbolStefan Beller, Jun 23, 2017
  114. 25/25 diff: document the new --color-moved settingStefan Beller, Jun 23, 2017
  115. 11/25 diff.c: emit_diff_symbol learns DIFF_SYMBOL_FILEPAIR_{PLUS, MINUS}Stefan Beller, Jun 23, 2017
  116. 24/25 diff.c: add dimming to moved line detectionStefan Beller, Jun 23, 2017
  117. 01/25 diff.c: readability fixStefan Beller, Jun 23, 2017
  118. 10/25 diff.c: emit_diff_symbol learns DIFF_SYMBOL_CONTEXT_INCOMPLETEStefan Beller, Jun 23, 2017
  119. 21/25 diff.c: buffer all output if asked toStefan Beller, Jun 23, 2017
  120. 08/25 diff.c: migrate emit_line_checked to use emit_diff_symbolStefan Beller, Jun 23, 2017
  121. 18/25 diff.c: convert word diffing to use emit_diff_symbolStefan Beller, Jun 23, 2017
  122. 17/25 diff.c: convert show_stats to use emit_diff_symbolStefan Beller, Jun 23, 2017
  123. 19/25 diff.c: emit_diff_symbol learns about DIFF_SYMBOL_STAT_SEPStefan Beller, Jun 23, 2017
  124. 20/25 diff.c: emit_diff_symbol learns about DIFF_SYMBOL_SUMMARYStefan Beller, Jun 23, 2017
  125. 16/25 diff.c: convert emit_binary_diff_body to use emit_diff_symbolStefan Beller, Jun 23, 2017

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